[clang] [APINotes] Match function-like Where.Parameters in Sema (PR #205307)

[John Hui via cfe-commits]

https://github.com/j-hui commented:

Thanks! This looks good to me overall and I'm ok with merging this, but I think the parameter selector extraction + matching could be cleaned up a bit, perhaps as a follow up patch.

https://github.com/llvm/llvm-project/pull/205307