[clang] [clang] Add support for MSVC force inline attrs (PR #185282)

[Trung Nguyen via cfe-commits]

trungnt2910 wrote:

Thanks for the review!

> But because Microsoft accepts, I think this is a bug that should be [reported to Microsoft](https://developercommunity.visualstudio.com/VisualStudio/) to see if they'll change behavior.

I filed the report to Microsoft:

https://developercommunity.visualstudio.com/t/msvc::forceinline-not-diagnosed-when/11068758

Please let me know what I should do next to move this PR forward.

https://github.com/llvm/llvm-project/pull/185282