* Consolidate RID and native file naming in MSBuild scripts
* Use short variable names for native files naming convention, that are
  used by `framework.sharedfx.targets` in arcade, and cleanup
  redefinitions from crossgen2 and installer. e.g. `ExeSuffix` instead
  of `ApplicationFileExtension`, `LibSuffix` instead of
  `LibraryFileExtension` and so on.
* Calculate `TargetArchitecture`, `NonPortableRuntimeOS` (for
  `PortableBuild`) and `PackageRID` values once for the entire
  livebuild, inside `eng/Configurations.props`. This implementation is
  a union of three varied implementations that are being deleted.
* Import `names.props` once in `eng/Configurations.props` based on
  calculated `PackageRID` and cleanup imports of this file from various
  places.
* Combine OS targets definition in MSBuild scripts.

* Delete legacy tooling properties

* Delete legacy tooling properties