[clang] [Clang][SME2] Add multi-vector zip & unzip builtins (PR #74841)

[Dinar Temirbulatov via cfe-commits]

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

LGTM, with David's request to rename acle_sme2_* acle_sme2_vector_* tests in clang/test/CodeGen/aarch64-sme2-intrinsics

https://github.com/llvm/llvm-project/pull/74841