clang-tidy: ignore `readability-function-cognitive-complexity`

.clang-tidy

@@ -19,6 +19,7 @@ modernize-*,\
 performance-*,\
 readability-*,\
 -readability-convert-member-functions-to-static,\
+-readability-function-cognitive-complexity,\
 -readability-function-size,\
 -readability-identifier-naming,\
 -readability-implicit-bool-conversion,\