[clang-tools-extra] [clang-tidy] New bugprone-unsafe-format-string check (PR #168691)

[Baranov Victor via cfe-commits]

vbvictor wrote:

> @vbvictor @EugeneZelenko thanks for your review. I tried to address your comments.

Would you push the changes since linter is still broken but comment is marked as resolved?

https://github.com/llvm/llvm-project/pull/168691