[clang-tools-extra] Add clang tidy check performance constexpr non static in scope (PR #147809)

[Carlos Galvez via cfe-commits]

carlosgalvezp wrote:

> bellow specific size

Like I mentioned in the other patch I think this is brittle and leads to poor UX, because you add 1 field to a struct in a header file and suddenly you have to change all clients. 

I'd be preferred to have the user specify which types to warn on. Maybe arrays could have an option of it's own.

https://github.com/llvm/llvm-project/pull/147809