[clang-tools-extra] [clang-tidy] Add new check 'bugprone-inconsistent-ifelse-braces' (PR #162361)

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<!--LLVM CODE FORMAT COMMENT: {clang-format}-->


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<summary>
You can test this locally with the following command:
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``````````bash
git-clang-format --diff origin/main HEAD --extensions cpp,h -- clang-tools-extra/clang-tidy/bugprone/InconsistentIfelseBracesCheck.cpp clang-tools-extra/clang-tidy/bugprone/InconsistentIfelseBracesCheck.h clang-tools-extra/test/clang-tidy/checkers/bugprone/inconsistent-ifelse-braces.cpp clang-tools-extra/clang-tidy/bugprone/BugproneTidyModule.cpp
``````````

:warning:
The reproduction instructions above might return results for more than one PR
in a stack if you are using a stacked PR workflow. You can limit the results by
changing `origin/main` to the base branch/commit you want to compare against.
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View the diff from clang-format here.
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``````````diff
diff --git a/clang-tools-extra/clang-tidy/bugprone/InconsistentIfelseBracesCheck.cpp b/clang-tools-extra/clang-tidy/bugprone/InconsistentIfelseBracesCheck.cpp
index e0ca5605e..b69546797 100644
--- a/clang-tools-extra/clang-tidy/bugprone/InconsistentIfelseBracesCheck.cpp
+++ b/clang-tools-extra/clang-tidy/bugprone/InconsistentIfelseBracesCheck.cpp
@@ -51,12 +51,12 @@ void InconsistentIfelseBracesCheck::registerMatchers(MatchFinder *Finder) {
       this);
 }
 
-void InconsistentIfelseBracesCheck::check(const MatchFinder::MatchResult &Result) {
+void InconsistentIfelseBracesCheck::check(
+    const MatchFinder::MatchResult &Result) {
   const auto *MatchedIf = Result.Nodes.getNodeAs<IfStmt>("if_stmt");
 
   if (shouldHaveBraces(MatchedIf) && !doesHaveBraces(MatchedIf)) {
-    diag(MatchedIf->getBeginLoc(), "bad!")
-        << MatchedIf->getSourceRange();
+    diag(MatchedIf->getBeginLoc(), "bad!") << MatchedIf->getSourceRange();
   }
 }
 

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https://github.com/llvm/llvm-project/pull/162361