[clang-tools-extra] [clang-tidy] Add new check `modernize-use-structured-binding` (PR #158462)

[via cfe-commits]

flovent wrote:

> I'd go for what's easier for now (simply ignoring). AFAIK, this case simply don't match right now? Could you add these examples in tests

Sadly it matches, but it can be ignored without much work, just need to check `VarDecl`'s init style.

> P.S. I hope to do another round of review in upcoming days

Thanks!

https://github.com/llvm/llvm-project/pull/158462