Add slnx file migrated from sln

Cpp2IL.slnx

@@ -0,0 +1,29 @@
+<Solution>
+  <Folder Name="/Solution Items/">
+    <File Path=".editorconfig" />
+    <File Path=".gitignore" />
+    <File Path=".github\workflows\dotnet-core.yml" />
+    <File Path=".github\FUNDING.yml" />
+    <File Path="LICENSE" />
+    <File Path="nuget.config" />
+    <File Path="README.md" />
+    <File Path="LibCpp2Il\README.md" />
+    <File Path="Cpp2IL.Core\README_CORE.md" />
+    <File Path="global.json" />
+    <File Path="do-release.ps1" />
+  </Folder>
+  <Folder Name="/Solution Items/Docs/">
+    <File Path="docs\CallAnalyzer.md" />
+  </Folder>
+  <Project Path="Cpp2IL.Core.Tests\Cpp2IL.Core.Tests.csproj" />
+  <Project Path="Cpp2IL.Core\Cpp2IL.Core.csproj" />
+  <Project Path="Cpp2IL.Plugin.BuildReport\Cpp2IL.Plugin.BuildReport.csproj" />
+  <Project Path="Cpp2IL.Plugin.ControlFlowGraph\Cpp2IL.Plugin.ControlFlowGraph.csproj" Type="Classic C#" />
+  <Project Path="Cpp2IL.Plugin.OrbisPkg\Cpp2IL.Plugin.OrbisPkg.csproj" />
+  <Project Path="Cpp2IL.Plugin.StrippedCodeRegSupport\Cpp2IL.Plugin.StrippedCodeRegSupport.csproj" />
+  <Project Path="Cpp2IL\Cpp2IL.csproj" />
+  <Project Path="LibCpp2ILTests\LibCpp2ILTests.csproj" />
+  <Project Path="LibCpp2IL\LibCpp2IL.csproj" />
+  <Project Path="StableNameDotNet\StableNameDotNet.csproj" />
+  <Project Path="WasmDisassembler\WasmDisassembler.csproj" />
+</Solution>