[clang-tools-extra] [clang-tidy][NFC] run clang-format over clang-tidy checks and tool code. (PR #143324)

[Nicolas van Kempen via cfe-commits]

https://github.com/nicovank approved this pull request.

LGTM! Can confirm that all `.cpp` and `.h` files in `clang-tools-extra/clang-tidy` pass under `clang-format` head. Maybe this can be added to some formatter CI? I'm not familiar with the CI setup.

https://github.com/llvm/llvm-project/pull/143324