[clang-tools-extra] [clang-tidy] add modernize-use-constexpr check (PR #162741)

[Baranov Victor via cfe-commits]

vbvictor wrote:

> @5chmidti, any chance to finally get the review finished? Would be cool to finally have it available. Is it possible to ping the missing reviewers? 

Hi, I don't think there are currently any blocking reviews missing.
I think Julian didn't have time to address current feedback, and as soon as he will there would be next round of review. 



https://github.com/llvm/llvm-project/pull/162741