Add CodeQL

.github/workflows/codeql.yml

@@ -0,0 +1,64 @@
+name: "CodeQL Scan"
+
+on:
+  push:
+    branches: [ "main" ]
+  pull_request:
+    branches: [ "main" ]
+  schedule:
+    - cron: '39 18 * * 6'
+  workflow_dispatch:
+
+jobs:
+  analyze:
+    name: Analyze (${{ matrix.language }})
+    # Runner size impacts CodeQL analysis time. To learn more, please see:
+    #   - https://gh.io/recommended-hardware-resources-for-running-codeql
+    #   - https://gh.io/supported-runners-and-hardware-resources
+    #   - https://gh.io/using-larger-runners (GitHub.com only)
+    # Consider using larger runners or machines with greater resources for possible analysis time improvements.
+    runs-on: ubuntu-24.04
+    permissions:
+      # required for all workflows
+      security-events: write
+
+      packages: read
+
+      actions: read
+      contents: read
+
+    strategy:
+      fail-fast: false
+      matrix:
+        include:
+        - language: actions
+          build-mode: none
+        - language: go
+          build-mode: autobuild
+    steps:
+    - name: Checkout repository
+      uses: actions/checkout@de0fac2e4500dabe0009e67214ff5f5447ce83dd # v4
+
+    - uses: actions/setup-go@4a3601121dd01d1626a1e23e37211e3254c1c06c # v5
+      with:
+        go-version-file: go.mod
+        check-latest: true
+
+    - name: Initialize CodeQL
+      uses: github/codeql-action/init@f25eda876ebb741d872b63b9f2c6dfdd77f14b83 # v4.35.5
+      with:
+        languages: ${{ matrix.language }}
+        build-mode: ${{ matrix.build-mode }}
+
+    - name: Perform CodeQL Analysis
+      id: analyze
+      uses: github/codeql-action/analyze@f25eda876ebb741d872b63b9f2c6dfdd77f14b83 # v4.35.5
+      with:
+        category: "/language:${{ matrix.language }}"
+        output: "../results-${{ matrix.language }}"
+
+    - name: Upload CodeQL results
+      uses: actions/upload-artifact@ea165f8d65b6e75b540449e92b4886f43607fa02 # v4.6.2
+      with:
+        name: CodeQL-${{ matrix.language }}.sarif
+        path: ${{ steps.analyze.outputs.sarif-output }}