Clean up clang-tidy action checks (#4331)

* clang-tidy action: Exclude lib & tests dir for clang-tidy CI checks

The lib dir is obvious, but the tests dir is disabled because gtest has
a million different thing that clang-tidy doesn't like, while they're in
reality perfectly reasonable

* clang-tidy-action: Disable the LGTM comment

.github/workflows/build.yml

@@ -166,6 +166,7 @@ jobs:
           build_dir: build
           config_file: ".clang-tidy"
           split_workflow: true
+          exclude: "tests/*,lib/*"
 
       - uses: actions/upload-artifact@v3
         if: (startsWith(matrix.os, 'ubuntu') && matrix.pch == false && matrix.qt-version == '5.15.2' && github.event_name == 'pull_request')

.github/workflows/post-clang-tidy-review.yml

@@ -37,3 +37,5 @@ jobs:
 
       - uses: ZedThree/clang-tidy-review/post@v0.10.1
         id: review
+        with:
+          lgtm_comment_body: ""