[clang] [compiler-rt] [llvm] [PAC][AArch64] Support init/fini array signing (PR #96478)

[Daniil Kovalev via cfe-commits]

kovdan01 wrote:

Ping: this PR blocks merging already approved #96159 (see https://github.com/llvm/llvm-project/pull/96159#issuecomment-2211411440), which transitively also blocks merging already approved dependent #96164.

Would be glad to see feedback on the changes from those who are interested.

https://github.com/llvm/llvm-project/pull/96478