[clang-tools-extra] [clang-tidy] Add IgnoreAboveThreshold option to readability-function-cognitive-complexity (PR #178965)

[via cfe-commits]

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@@ -177,6 +177,13 @@ Changes in existing checks
   now uses separate note diagnostics for each uninitialized enumerator, making
   it easier to see which specific enumerators need explicit initialization.
 
+- Improved :doc:`readability-function-cognitive-complexity
+  <clang-tidy/checks/readability/function-cognitive-complexity>` check:
+
+  - Added `IgnoreAboveThreshold` option to skip functions with complexity
+    at or above a certain threshold, allowing users to ignore "hopelessly"
+    complex functions.
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EugeneZelenko wrote:

```suggestion
- Improved :doc:`readability-function-cognitive-complexity
  <clang-tidy/checks/readability/function-cognitive-complexity>` check by
  adding `IgnoreAboveThreshold` option to skip functions with complexity at or
  above a certain threshold, allowing users to ignore "hopelessly" complex
  functions.
```

https://github.com/llvm/llvm-project/pull/178965