[clang-tools-extra] [clang-tidy] Header check support for check_clang_tidy.py (PR #175735)

[Baranov Victor via cfe-commits]

https://github.com/vbvictor commented:

Could you give please some high-level overview/description of what is happening here?
Otherwise, It's a bit hard to get what is going on at first glace.



https://github.com/llvm/llvm-project/pull/175735