[llvm] [SPIR-V] Add NonSemantic.AuxData emission (-spirv-preserve-auxdata) (PR #200002)

[Arseniy Obolenskiy via llvm-commits]

aobolensk wrote:

> Please remove available_externally from the PR name. Keep it in the description.

Done

> Does the patch handle a case for value/numeric metadata aka (!{i32 5})?

Now it does 


https://github.com/llvm/llvm-project/pull/200002