Add support for AnalysisMode

Closes dotnet#4100

**Proposal**
This new property would allow users to switch between following 3 analysis modes:

1. **Default mode**: Analyzers with enabled by default and severity values that we ship today. It will continue to be the default analysis mode.
2. **OptIn or AllDisabled or Conservative mode**: All analyzers are disabled by default. Only the ones that user explicitly enables in their editorconfig/ruleset will be enabled with the explicitly configured severity.
3. **OptOut or AllEnabled or Aggressive mode**: Majority of analyzers get enabled as warnings, similar to the current FxCop analyzers package. We still want some security rules and no longer recommended rules to be disabled, but for all practical purposes, we can consider this to be the most aggressive analysis mode for the package.

The property should work amicably with AnalysisLevel, i.e. if user sets AnalysisLevel to 5.0, the aggressive, all-enabled mode only turns on rules shipped in or before 5.0 to warnings. Rules shipping after 5.0 will still be turned off by default.

**Targeted scenarios**

1. **User requests**: We already have a few user requests to enable aggressive analysis mode, similar to FxCop analyzers:
   1. dotnet#4100: This was requested from a customer from Jon’s blog.
   2. dotnet/roslyn#47046: This was requested from a customer trying out our bulk configuration editorconfig functionality to switch NetAnalyzers to be as aggressive as FxCopAnalyzers
This feature enables users who are super passionate about analyzers and code quality to easily switch to an opt-out, aggressive, analysis mode, which seems fantastic to me! At the same time, it helps users who like complete opt-in model with explicit control over each rule that is enabled in their configuration file.

2. **Path to deprecation for FxCopAnalyzers package**: Currently, we ship identical CA rules in FxCopAnalyzers and NetAnalyzers package/SDK. The only difference is default severity and enabled by default values for rules. Adding this AnalysisMode knob means existing FxCop analyzer customers can easily migrate to the .NET SDK based analyzers and get equivalent functionality and this allows us to deprecate this package soon. This will make the overall code quality analyzers story much cleaner from an end user perspective.

src/NetAnalyzers/Core/Microsoft.CodeQuality.Analyzers/ApiDesignGuidelines/AvoidExcessiveParametersOnGenericTypes.cs

@@ -27,7 +27,8 @@ public sealed class AvoidExcessiveParametersOnGenericTypes : DiagnosticAnalyzer
             s_localizableDescription,
             isPortedFxCopRule: true,
             isDataflowRule: false,
-            isEnabledByDefaultInFxCopAnalyzers: false);
+            isEnabledByDefaultInFxCopAnalyzers: false,
+            isEnabledByDefaultInAggressiveMode: false);
 
         public override ImmutableArray<DiagnosticDescriptor> SupportedDiagnostics => ImmutableArray.Create(Rule);
 

src/NetAnalyzers/Core/Microsoft.CodeQuality.Analyzers/ApiDesignGuidelines/AvoidOutParameters.cs

@@ -28,7 +28,8 @@ public sealed class AvoidOutParameters : DiagnosticAnalyzer
                                                                              description: s_localizableDescription,
                                                                              isPortedFxCopRule: true,
                                                                              isDataflowRule: false,
-                                                                             isEnabledByDefaultInFxCopAnalyzers: false);
+                                                                             isEnabledByDefaultInFxCopAnalyzers: false,
+                                                                             isEnabledByDefaultInAggressiveMode: false);
 
         public override ImmutableArray<DiagnosticDescriptor> SupportedDiagnostics => ImmutableArray.Create(Rule);
 

src/NetAnalyzers/Core/Microsoft.CodeQuality.Analyzers/ApiDesignGuidelines/CollectionPropertiesShouldBeReadOnly.cs

@@ -44,7 +44,8 @@ public class CollectionPropertiesShouldBeReadOnlyAnalyzer : DiagnosticAnalyzer
                                                                     RuleLevel.Disabled, // Guidance needs to be improved to be more clear
                                                                     description: s_localizableDescription,
                                                                     isPortedFxCopRule: true,
-                                                                    isDataflowRule: false);
+                                                                    isDataflowRule: false,
+                                                                    isEnabledByDefaultInAggressiveMode: false);
 
         public override ImmutableArray<DiagnosticDescriptor> SupportedDiagnostics => ImmutableArray.Create(Rule);
 

src/NetAnalyzers/Core/Microsoft.CodeQuality.Analyzers/ApiDesignGuidelines/DoNotExposeGenericLists.cs

@@ -26,7 +26,8 @@ public sealed class DoNotExposeGenericLists : DiagnosticAnalyzer
             description: s_localizableDescription,
             isPortedFxCopRule: true,
             isDataflowRule: false,
-            isEnabledByDefaultInFxCopAnalyzers: false);
+            isEnabledByDefaultInFxCopAnalyzers: false,
+            isEnabledByDefaultInAggressiveMode: false);
 
         public override ImmutableArray<DiagnosticDescriptor> SupportedDiagnostics => ImmutableArray.Create(Rule);
 

src/NetAnalyzers/Core/Microsoft.CodeQuality.Analyzers/ApiDesignGuidelines/DoNotNameEnumValuesReserved.cs

@@ -28,7 +28,8 @@ public sealed class DoNotNameEnumValuesReserved : DiagnosticAnalyzer
             description: s_localizableDescription,
             isPortedFxCopRule: true,
             isDataflowRule: false,
-            isEnabledByDefaultInFxCopAnalyzers: false);
+            isEnabledByDefaultInFxCopAnalyzers: false,
+            isEnabledByDefaultInAggressiveMode: false);
 
         public override ImmutableArray<DiagnosticDescriptor> SupportedDiagnostics => ImmutableArray.Create(Rule);
 

src/NetAnalyzers/Core/Microsoft.CodeQuality.Analyzers/ApiDesignGuidelines/DoNotOverloadOperatorEqualsOnReferenceTypes.cs

@@ -26,7 +26,8 @@ public sealed class DoNotOverloadOperatorEqualsOnReferenceTypes : DiagnosticAnal
             description: s_localizableDescription,
             isPortedFxCopRule: true,
             isDataflowRule: false,
-            isEnabledByDefaultInFxCopAnalyzers: false);
+            isEnabledByDefaultInFxCopAnalyzers: false,
+            isEnabledByDefaultInAggressiveMode: false);
 
         public override ImmutableArray<DiagnosticDescriptor> SupportedDiagnostics => ImmutableArray.Create(Rule);
 

src/NetAnalyzers/Core/Microsoft.CodeQuality.Analyzers/ApiDesignGuidelines/DoNotPassTypesByReference.cs

@@ -26,7 +26,8 @@ public sealed class DoNotPassTypesByReference : DiagnosticAnalyzer
             description: s_localizableDescription,
             isPortedFxCopRule: true,
             isDataflowRule: false,
-            isEnabledByDefaultInFxCopAnalyzers: false);
+            isEnabledByDefaultInFxCopAnalyzers: false,
+            isEnabledByDefaultInAggressiveMode: false);
 
         public override ImmutableArray<DiagnosticDescriptor> SupportedDiagnostics => ImmutableArray.Create(Rule);
 

src/NetAnalyzers/Core/Microsoft.CodeQuality.Analyzers/ApiDesignGuidelines/InterfaceMethodsShouldBeCallableByChildTypes.cs

@@ -39,7 +39,8 @@ public sealed class InterfaceMethodsShouldBeCallableByChildTypesAnalyzer : Diagn
                                                                           description: s_localizableDescription,
                                                                           isPortedFxCopRule: true,
                                                                           isDataflowRule: false,
-                                                                          isEnabledByDefaultInFxCopAnalyzers: false);
+                                                                          isEnabledByDefaultInFxCopAnalyzers: false,
+                                                                          isEnabledByDefaultInAggressiveMode: false);
 
         public sealed override ImmutableArray<DiagnosticDescriptor> SupportedDiagnostics => ImmutableArray.Create(Rule);
 

src/NetAnalyzers/Core/Microsoft.CodeQuality.Analyzers/ApiDesignGuidelines/MarkAssembliesWithComVisible.cs

@@ -27,7 +27,8 @@ public sealed class MarkAssembliesWithComVisibleAnalyzer : DiagnosticAnalyzer
                                                                                        description: s_localizableDescription,
                                                                                        isPortedFxCopRule: true,
                                                                                        isDataflowRule: false,
-                                                                                       isEnabledByDefaultInFxCopAnalyzers: false);
+                                                                                       isEnabledByDefaultInFxCopAnalyzers: false,
+                                                                                       isEnabledByDefaultInAggressiveMode: false);
 
         internal static readonly DiagnosticDescriptor RuleAddComVisible = DiagnosticDescriptorHelper.Create(RuleId,
                                                                                        s_localizableTitle,
@@ -37,7 +38,8 @@ public sealed class MarkAssembliesWithComVisibleAnalyzer : DiagnosticAnalyzer
                                                                                        description: s_localizableDescription,
                                                                                        isPortedFxCopRule: true,
                                                                                        isDataflowRule: false,
-                                                                                       isEnabledByDefaultInFxCopAnalyzers: false);
+                                                                                       isEnabledByDefaultInFxCopAnalyzers: false,
+                                                                                       isEnabledByDefaultInAggressiveMode: false);
 
         public override ImmutableArray<DiagnosticDescriptor> SupportedDiagnostics => ImmutableArray.Create(RuleChangeComVisible, RuleAddComVisible);
 

src/NetAnalyzers/Core/Microsoft.CodeQuality.Analyzers/ApiDesignGuidelines/MovePInvokesToNativeMethodsClass.cs

@@ -29,7 +29,8 @@ public sealed class MovePInvokesToNativeMethodsClassAnalyzer : DiagnosticAnalyze
                                                                          description: s_localizableDescription,
                                                                          isPortedFxCopRule: true,
                                                                          isDataflowRule: false,
-                                                                         isEnabledByDefaultInFxCopAnalyzers: false);
+                                                                         isEnabledByDefaultInFxCopAnalyzers: false,
+                                                                         isEnabledByDefaultInAggressiveMode: false);
 
         private const string NativeMethodsText = "NativeMethods";
         private const string SafeNativeMethodsText = "SafeNativeMethods";

src/NetAnalyzers/Core/Microsoft.CodeQuality.Analyzers/ApiDesignGuidelines/UseGenericEventHandlerInstances.cs

@@ -41,7 +41,8 @@ public sealed class UseGenericEventHandlerInstancesAnalyzer : DiagnosticAnalyzer
             description: s_localizableDescriptionForDelegate,
             isPortedFxCopRule: true,
             isDataflowRule: false,
-            isEnabledByDefaultInFxCopAnalyzers: false);
+            isEnabledByDefaultInFxCopAnalyzers: false,
+            isEnabledByDefaultInAggressiveMode: false);
 
         internal static DiagnosticDescriptor RuleForEvents = DiagnosticDescriptorHelper.Create(
             RuleId,
@@ -52,7 +53,8 @@ public sealed class UseGenericEventHandlerInstancesAnalyzer : DiagnosticAnalyzer
             description: s_localizableDescriptionForEvent,
             isPortedFxCopRule: true,
             isDataflowRule: false,
-            isEnabledByDefaultInFxCopAnalyzers: false);
+            isEnabledByDefaultInFxCopAnalyzers: false,
+            isEnabledByDefaultInAggressiveMode: false);
 
         internal static DiagnosticDescriptor RuleForEvents2 = DiagnosticDescriptorHelper.Create(
             RuleId,