[clang] [HLSL] Add bounds checks for the hlsl vector arguments and return types (PR #130724)

[Sarah Spall via cfe-commits]

https://github.com/spall commented:

Looks mostly good to me, a couple of questions though which applied to most of the templates in the code, but I only commented on the first instances I saw.
1. Do you need to check T is arithmetic if you're also checking its half? Wont' the half check suffice?
2. capitalize value here? I assume this didn't cause you an error but nice to be consistent with use of Caps

https://github.com/llvm/llvm-project/pull/130724