Added many missing properties to CommonTypes (#4473)
Added many missing properties to CommonTypes (#4473)

* Added many missing properties to CommonTypes as well as attributes to PackageReference and a new item for FrameworkReference.

* Addressing code review comments.

* Updating the help message for TrimmerRootDescriptor.

rainersigwald/msbuild,mono/msbuild,rainersigwald/msbuild,mono/msbuild,jeffkl/msbuild,sean-gilliam/msbuild,chipitsine/msbuild,AndyGerlicher/msbuild,cdmihai/msbuild,cdmihai/msbuild,jeffkl/msbuild,sean-gilliam/msbuild,cdmihai/msbuild,jeffkl/msbuild,cdmihai/msbuild,sean-gilliam/msbuild,mono/msbuild,chipitsine/msbuild,AndyGerlicher/msbuild,mono/msbuild,AndyGerlicher/msbuild,sean-gilliam/msbuild,jeffkl/msbuild,rainersigwald/msbuild,rainersigwald/msbuild,chipitsine/msbuild,AndyGerlicher/msbuild,chipitsine/msbuild