[clang] [HLSL] add IsLineVectorLayoutCompatible type trait (PR #113730)

[Helena Kotas via cfe-commits]

https://github.com/hekota requested changes to this pull request.

If you are going to store `isHLSLLineVectorLayoutCompatibleType` on a declaration you need to modify addMember to analyze newly added members. Then move the IsLineVectorLayoutCompatibleType implementation from SemaHLSL to Type and use the bit on the record type decl instead of building flattened type list.

https://github.com/llvm/llvm-project/pull/113730