(#58446)
* Multi-target LoggerMessageGenerator between Roslyn v3.11 and v4.0
* Include a .targets file in NuGet packages which will select the correct analyzer assembly depending on which Roslyn version will be used to compile.
* Multi-target JsonSourceGenerator between Roslyn v3.11 and v4.0
* Fix restore
* Update NuGet package MSBuild logic to detect when SupportsRoslynComponentVersioning is not available, and use the lowest analyzer available.
* Handle non-SDK projects by running after ResolveNuGetPackageAssets
* Respond to PR feedback
- Name .cs and .csproj files with Roslyn in the name
- Upgrade to Roslyn 3.11 so IsExplicitlyNamedTupleElement API is available
- Fix some references to the test projects
- Fix incremental pack of the analyzer targets
