[llvm] [SPIRV] Addition of extension SPV_KHR_non_semantic_info (PR #165302)

[Nathan Gauër via llvm-commits]

Keenuts wrote:

This extension is required to use `OpExtInstWithForwardRefsKHR`, which is not used as-is in this PR.
However, if you implement debug instructions for class methods, this will be required as those adds a circular dependency on debug instructions operands (spirv-val should complain if this happens)

https://github.com/llvm/llvm-project/pull/165302