[clang-tools-extra] [clang-tidy] Make `P +- BS / sizeof(*P)` opt-outable in `bugprone-sizeof-expression` (PR #111178)

[Daniel Pouzzner via cfe-commits]

douzzer wrote:

The first draft solution worked perfectly for me, tested via cherry pick.  Will keep an eye on this PR in case the key name changes.

Thanks @whisperity!


https://github.com/llvm/llvm-project/pull/111178