[clang-tools-extra] [llvm] New check `misc-header-guard` (PR #177315)

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``````````bash
git-clang-format --diff origin/main HEAD --extensions cpp,hpp,h -- clang-tools-extra/clang-tidy/misc/HeaderGuardCheck.cpp clang-tools-extra/clang-tidy/misc/HeaderGuardCheck.h clang-tools-extra/test/clang-tidy/checkers/misc/header-guard.cpp clang-tools-extra/test/clang-tidy/checkers/misc/header-guard/include/correct.hpp clang-tools-extra/test/clang-tidy/checkers/misc/header-guard/include/missing.hpp clang-tools-extra/test/clang-tidy/checkers/misc/header-guard/include/other/correct.hpp clang-tools-extra/test/clang-tidy/checkers/misc/header-guard/include/other/missing.hpp clang-tools-extra/test/clang-tidy/checkers/misc/header-guard/include/other/wrong.hpp clang-tools-extra/test/clang-tidy/checkers/misc/header-guard/include/wrong.hpp clang-tools-extra/clang-tidy/misc/MiscTidyModule.cpp --diff_from_common_commit
``````````

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View the diff from clang-format here.
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``````````diff
diff --git a/clang-tools-extra/clang-tidy/misc/MiscTidyModule.cpp b/clang-tools-extra/clang-tidy/misc/MiscTidyModule.cpp
index 27cda7fd6..8523031ef 100644
--- a/clang-tools-extra/clang-tidy/misc/MiscTidyModule.cpp
+++ b/clang-tools-extra/clang-tidy/misc/MiscTidyModule.cpp
@@ -54,8 +54,7 @@ public:
         "misc-coroutine-hostile-raii");
     CheckFactories.registerCheck<DefinitionsInHeadersCheck>(
         "misc-definitions-in-headers");
-    CheckFactories.registerCheck<HeaderGuardCheck>(
-        "misc-header-guard");
+    CheckFactories.registerCheck<HeaderGuardCheck>("misc-header-guard");
     CheckFactories.registerCheck<HeaderIncludeCycleCheck>(
         "misc-header-include-cycle");
     CheckFactories.registerCheck<IncludeCleanerCheck>("misc-include-cleaner");

``````````

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https://github.com/llvm/llvm-project/pull/177315