[llvm-branch-commits] [clang] [llvm] [HLSL][RootSignature] Add parsing for RootFlags (PR #138055)

[Deric C. via llvm-branch-commits]

https://github.com/Icohedron approved this pull request.

Looks good aside from one nit about an extra space before a comma

https://github.com/llvm/llvm-project/pull/138055