[clang] [sanitizer] Add plumbing for -fsanitize-add-pseudo-functions and partly replace '-mllvm -array-bounds-pseudofn' (PR #138577)

[Vitaly Buka via cfe-commits]

vitalybuka wrote:

In description ?
> Florian1

@fmayer would be nicer for cross-linking

https://github.com/llvm/llvm-project/pull/138577