[clang-tools-extra] [clang-tidy] Add QtEnabled option to modernize-use-integer-sign-comprison (PR #122127)

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@@ -34,3 +34,7 @@ Options
 
   A string specifying which include-style is used, `llvm` or `google`.
   Default is `llvm`.
+
+.. option:: QtEnabled
+  Makes C++17 ``q20::cmp_*`` alternative available for Qt-based
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EugeneZelenko wrote:

Please separate with newline.

https://github.com/llvm/llvm-project/pull/122127