[clang-tools-extra] Add option to exclude headers from clang-tidy analysis (PR #91400)

[Piotr Zegar via cfe-commits]

================
@@ -115,6 +115,8 @@ Improvements to clang-tidy
 - Fixed `--verify-config` option not properly parsing checks when using the
   literal operator in the `.clang-tidy` config.
 
+- Added argument `--exclude-header-filter` to exclude headers from analysis via a RegEx.
----------------
PiotrZSL wrote:

Mention that config option ExcludeHeaderFilterRegex is also added.
```suggestion
- Added argument `--exclude-header-filter` and config option `ExcludeHeaderFilterRegex` 
  to exclude headers from analysis via a RegEx.
```

https://github.com/llvm/llvm-project/pull/91400