(GH-77) Make issue provider type name available on issue provider

src/Cake.Issues.DocFx/DocFxIssuesAliases.cs

@@ -23,7 +23,7 @@ public static string DocFxIssuesProviderTypeName(
         {
             context.NotNull(nameof(context));
 
-            return typeof(DocFxIssuesProvider).FullName;
+            return DocFxIssuesProvider.ProviderTypeName;
         }
 
         /// <summary>

src/Cake.Issues.DocFx/DocFxIssuesProvider.cs

@@ -25,6 +25,12 @@ public DocFxIssuesProvider(ICakeLog log, DocFxIssuesSettings issueProviderSettin
         {
         }
 
+        /// <summary>
+        /// Gets the name of the DocFx issue provider.
+        /// This name can be used to identify issues based on the <see cref="IIssue.ProviderType"/> property.
+        /// </summary>
+        public static string ProviderTypeName => typeof(DocFxIssuesProvider).FullName;
+
         /// <inheritdoc />
         public override string ProviderName => "DocFX";