Implement new COM interop API for RCW/CCW creation/management

[AaronRobinsonMSFT]

Implementation of the proposed API found at #1845.

All new tests run and pass on Windows running under COMPlus_GCStress=0xC.

In order to allow code generators to make performant RCW/CCW implementations, the NativeCallableAttribute should be made public and the C# function pointers proposal should be implemented.

TODO:

• Complete Peg/Unpeg API implementation.

• Remove all new TODOs.

• Finish E2E testing provided by the Mock Tracker Runtime project.

• Add testing for skip cache scenarios when creating managed wrappers.

• Handle build issues on non-Windows platforms.

• Remove shutdown logic once Remove unused COM shutdown logic. #32381 is merged in.

• Add logging to the runtime side of the interoplib library.

• Investigate how the following COM APIs work with this API.

  • Marshal.ReleaseComObject() - Properly handled.
  • Marshal.FinalReleaseComObject() - Properly handled.
  • Marshal.GetIUnknownForObject() - Calling this on a wrapper object created by this new API will passively create an old style CCW. Deferring any changes until customer reported.

Future issues to file:

• Share additional code between existing RCW/CCW support and new API.

• Update Marshal.GetIUnknownForObject() and Marshal.GetObjectForIUnknown() to check and possible use the globally registered ComWrappers instance - see Implement new COM interop API for RCW/CCW creation/management #32091 (comment).

  • See Marshal.GetIUnknownForObject() and Marshal.GetObjectForIUnknown() should be updated to use ComWrappers API. #33329

• Consider removing the existing built-in WinRT support - see Implement new COM interop API for RCW/CCW creation/management #32091 (comment).

  • See Remove some WinRT code that was replaced by the new ComWrappers API. #33330.

/cc @jkotas @jkoritzinsky @Scottj1s @davidwrighton

[AaronRobinsonMSFT]

All green - w00t! @jkotas and @jkoritzinsky Any more feedback or thoughts? Still waiting for API review, but this is a large PR and will take some time. Thanks.