[clang] [Clang][AArch64] Add FP8 variants of Neon store intrinsics (PR #145346)

[via cfe-commits]

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

LTGM! Maybe we could see what is up with the LD and ST being split into VLD and only LD

https://github.com/llvm/llvm-project/pull/145346