Update Roslyn tooling versions.

- Moved from 3.4.0 Roslyn to 3.6.0-3.20168.4 for tooling builds.
- As part of this change I found that our package versions were starting to get really confusing for which Roslyn packages were runtime vs. which ones were tooling. Therefore, I rebranded each of the versions to be `Tooling_` or `Runtime_` accordingly. Moved all `VSIX_` => `Tooling_`.
- Roslyn's bits depended on a newer `StreamJsonRpc`, `Microsoft.VisualStudio.Threading` and `Microsoft.VisualStudio.LanguageServer.Client` packages so updated those dependencies to not have version conflicts.
- This new update brought in loads of new analyzers. Went through the warnings and either applied the fix or suppressed.
- This is in preparation for consuming new pieces from latest Roslyn packages.
\n\nCommit migrated from df5261e418

src/Razor/Microsoft.AspNetCore.Mvc.Razor.Extensions.Version1_X/test/Microsoft.AspNetCore.Mvc.Razor.Extensions.Version1_X.Test.csproj

@@ -24,7 +24,7 @@
 
   <ItemGroup>
     <PackageReference Include="Microsoft.AspNetCore.Testing" Version="$(MicrosoftAspNetCoreTestingPackageVersion)" />
-    <PackageReference Include="Microsoft.CodeAnalysis.CSharp" Version="$(MicrosoftCodeAnalysisCSharpPackageVersion)" />
+    <PackageReference Include="Microsoft.CodeAnalysis.CSharp" Version="$(Runtime_MicrosoftCodeAnalysisCSharpPackageVersion)" />
     <PackageReference Include="Microsoft.Extensions.DependencyModel" Version="$(MicrosoftExtensionsDependencyModelPackageVersion)" />
     <PackageReference Include="Moq" Version="$(MoqPackageVersion)" />
   </ItemGroup>

src/Razor/Microsoft.AspNetCore.Mvc.Razor.Extensions.Version2_X/test/Microsoft.AspNetCore.Mvc.Razor.Extensions.Version2_X.Test.csproj

@@ -24,7 +24,7 @@
 
   <ItemGroup>
     <PackageReference Include="Microsoft.AspNetCore.Testing" Version="$(MicrosoftAspNetCoreTestingPackageVersion)" />
-    <PackageReference Include="Microsoft.CodeAnalysis.CSharp" Version="$(MicrosoftCodeAnalysisCSharpPackageVersion)" />
+    <PackageReference Include="Microsoft.CodeAnalysis.CSharp" Version="$(Runtime_MicrosoftCodeAnalysisCSharpPackageVersion)" />
     <PackageReference Include="Microsoft.Extensions.DependencyModel" Version="$(MicrosoftExtensionsDependencyModelPackageVersion)" />
     <PackageReference Include="Moq" Version="$(MoqPackageVersion)" />
   </ItemGroup>

src/Razor/Microsoft.AspNetCore.Mvc.Razor.Extensions/test/Microsoft.AspNetCore.Mvc.Razor.Extensions.Test.csproj

@@ -23,7 +23,7 @@
 
   <ItemGroup>
     <PackageReference Include="Microsoft.AspNetCore.Testing" Version="$(MicrosoftAspNetCoreTestingPackageVersion)" />
-    <PackageReference Include="Microsoft.CodeAnalysis.CSharp" Version="$(MicrosoftCodeAnalysisCSharpPackageVersion)" />
+    <PackageReference Include="Microsoft.CodeAnalysis.CSharp" Version="$(Runtime_MicrosoftCodeAnalysisCSharpPackageVersion)" />
     <PackageReference Include="Microsoft.Extensions.DependencyModel" Version="$(MicrosoftExtensionsDependencyModelPackageVersion)" />
     <PackageReference Include="Moq" Version="$(MoqPackageVersion)" />
   </ItemGroup>

src/Razor/Microsoft.CodeAnalysis.Razor/src/Microsoft.CodeAnalysis.Razor.csproj

@@ -10,7 +10,7 @@
   </ItemGroup>
 
   <ItemGroup>
-    <PackageReference Include="Microsoft.CodeAnalysis.Common" Version="$(MicrosoftCodeAnalysisCommonPackageVersion)" />
+    <PackageReference Include="Microsoft.CodeAnalysis.Common" Version="$(Runtime_MicrosoftCodeAnalysisCommonPackageVersion)" />
-    <PackageReference Include="Microsoft.CodeAnalysis.CSharp" Version="$(MicrosoftCodeAnalysisCSharpPackageVersion)" />
+    <PackageReference Include="Microsoft.CodeAnalysis.CSharp" Version="$(Runtime_MicrosoftCodeAnalysisCSharpPackageVersion)" />
   </ItemGroup>
 </Project>

src/Razor/Microsoft.CodeAnalysis.Razor/test/Microsoft.CodeAnalysis.Razor.Test.csproj

@@ -21,7 +21,7 @@
   </ItemGroup>
 
   <ItemGroup>
-    <PackageReference Include="Microsoft.CodeAnalysis.CSharp" Version="$(MicrosoftCodeAnalysisCSharpPackageVersion)" />
+    <PackageReference Include="Microsoft.CodeAnalysis.CSharp" Version="$(Runtime_MicrosoftCodeAnalysisCSharpPackageVersion)" />
     <PackageReference Include="Microsoft.Extensions.DependencyModel" Version="$(MicrosoftExtensionsDependencyModelPackageVersion)" />
     <PackageReference Include="Moq" Version="$(MoqPackageVersion)" />
   </ItemGroup>

src/Razor/test/Microsoft.AspNetCore.Razor.Test.Common/Microsoft.AspNetCore.Razor.Test.Common.csproj

@@ -15,7 +15,7 @@
 
   <ItemGroup>
     <PackageReference Include="Microsoft.AspNetCore.Testing" Version="$(MicrosoftAspNetCoreTestingPackageVersion)" />
-    <PackageReference Include="Microsoft.CodeAnalysis.CSharp" Version="$(MicrosoftCodeAnalysisCSharpPackageVersion)" />
+    <PackageReference Include="Microsoft.CodeAnalysis.CSharp" Version="$(Runtime_MicrosoftCodeAnalysisCSharpPackageVersion)" />
     <PackageReference Include="Microsoft.Extensions.DependencyModel" Version="$(MicrosoftExtensionsDependencyModelPackageVersion)" />
     <PackageReference Include="xunit" Version="$(XunitVersion)" />
   </ItemGroup>