Add CodeQL Code Scanning

.github/workflows/codeql.yml

@@ -0,0 +1,49 @@
+name: "CodeQL Advanced"
+
+on:
+  push:
+    branches: [ "main" ]
+  pull_request:
+    branches: [ "main" ]
+  schedule:
+    - cron: '31 17 * * 2'
+
+jobs:
+  analyze:
+    name: Analyze (${{ matrix.os }})
+    runs-on: ${{ matrix.os }}
+    permissions:
+      security-events: write
+      packages: read
+
+    strategy:
+      fail-fast: false
+      matrix:
+        os: [ubuntu-latest, macos-latest]
+        language: [c-cpp]
+        build-mode: [manual]
+
+    steps:
+    - name: Checkout repository
+      uses: actions/checkout@v4
+
+    - name: Install dependencies
+      if: runner.os == 'Linux'
+      run: |
+        sudo apt-get update
+        sudo apt-get install -y libpcap-dev
+
+    - name: Initialize CodeQL
+      uses: github/codeql-action/init@v3
+      with:
+        languages: ${{ matrix.language }}
+        build-mode: ${{ matrix.build-mode }}
+
+    - if: matrix.build-mode == 'manual'
+      shell: bash
+      run: make
+
+    - name: Perform CodeQL Analysis
+      uses: github/codeql-action/analyze@v3
+      with:
+        category: "/language:${{matrix.language}}"