[clang] [Clang][AArch64] Add fix vector types to header into SVE (PR #73258)

[Paul Walker via cfe-commits]

paulwalker-arm wrote:

Bike shedding here but shouldn't the header be arm_vector_types.h (i.e. plural)? or even arm_acle_types.h if we think it might grow more uses.

https://github.com/llvm/llvm-project/pull/73258