workflow: Add clang-tidy reviews for all pull requests

Author: rdb

.clang-tidy

@@ -0,0 +1,6 @@
+---
+Checks: 'clang-diagnostic-*,clang-analyzer-*,performance-*,portability-*,modernize-use-nullptr'
+WarningsAsErrors: ''
+HeaderFilterRegex: ''
+FormatStyle: none
+...

.github/workflows/lint.yml

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+name: Lint
+on: [pull_request]
+
+jobs:
+  clang-tidy:
+    runs-on: ubuntu-20.04
+    steps:
+    - uses: actions/checkout@v3
+    - name: Install clang-tidy
+      run: |
+        sudo apt-get update
+        sudo apt-get install -y clang-tidy build-essential pkg-config libpng-dev libjpeg-dev libtiff-dev zlib1g-dev libssl-dev libx11-dev libgl1-mesa-dev libxrandr-dev libxxf86dga-dev libxcursor-dev libfreetype6-dev libvorbis-dev libeigen3-dev libopenal-dev libode-dev libbullet-dev libgtk-3-dev libassimp-dev libopenexr-dev
+    - name: Prepare compile_commands.json
+      run: |
+        cmake -B build -DCMAKE_EXPORT_COMPILE_COMMANDS=ON -DCMAKE_UNITY_BUILD=OFF -DHAVE_PYTHON=OFF -DINTERROGATE_PYTHON_INTERFACE=OFF
+    - name: Copy prebuilt files
+      run: |
+        for fn in **/*.prebuilt; do
+          echo mkdir -p $(dirname "cmake/$fn");
+          echo cp "$fn" "cmake/${fn%.*}";
+        done
+    - name: Create results directory
+      run: |
+        mkdir clang-tidy-result
+    - name: Analyze
+      run: |
+        git diff -U0 HEAD^ | clang-tidy-diff -p1 -path build -export-fixes clang-tidy-result/fixes.yml
+    - name: Post review
+      uses: platisd/clang-tidy-pr-comments@master
+      with:
+        github_token: ${{ github.token }}
+        clang_tidy_fixes: clang-tidy-result/fixes.yml
+        request_changes: true
+        suggestions_per_comment: 10