[clang-tools-extra] [clang-tidy] Add performance-redundant-lookup check (PR #125420)

[Balazs Benics via cfe-commits]

steakhal wrote:

> Could you please run this with `--enable-check-profile` to see how heavy it is?

I plan to re-run it on clang soon, and share the results.

https://github.com/llvm/llvm-project/pull/125420