Add CodeQL scanning

.github/workflows/codeql.yml

@@ -0,0 +1,53 @@
+name: "CodeQL"
+
+on:
+  push:
+    branches: [ "main" ]
+  pull_request:
+    branches: [ "main" ]
+  schedule:
+    - cron: "38 1 * * 0"
+
+jobs:
+  analyze:
+    name: Analyze ${{matrix.language}}
+    runs-on: ubuntu-latest
+    permissions:
+      security-events: write
+
+    strategy:
+      fail-fast: false
+      matrix:
+        include:
+        - language: actions
+          build-mode: none
+        - language: c-cpp
+          build-mode: manual
+        - language: python
+          build-mode: none
+    steps:
+    - name: Checkout the code
+      uses: actions/checkout@11bd71901bbe5b1630ceea73d27597364c9af683 # v4.2.2
+      with:
+        submodules: recursive
+    - name: Set up Python 3
+      uses: actions/setup-python@a26af69be951a213d495a4c3e4e4022e16d87065 # v5.6.0
+      with:
+        python-version: 3
+    - name: Install dependencies for Python
+      run: |
+        python -m pip install --upgrade pip
+        python -m pip install -r requirements.txt
+    - name: Initialize CodeQL
+      uses: github/codeql-action/init@ce28f5bb42b7a9f2c824e633a3f6ee835bab6858 # v3.29.0
+      with:
+        languages: ${{matrix.language}}
+        build-mode: ${{matrix.build-mode}}
+        queries: security-extended,security-and-quality
+    - if: matrix.build-mode == 'manual'
+      run: |
+        python setup.py build_ext --inplace
+    - name: Perform CodeQL Analysis
+      uses: github/codeql-action/analyze@ce28f5bb42b7a9f2c824e633a3f6ee835bab6858 # v3.29.0
+      with:
+        category: "/language:${{matrix.language}}"