ci: add trial CodeQL workflow

.github/workflows/codeql.yml

@@ -0,0 +1,45 @@
+name: CodeQL
+
+on:
+  push:
+    branches: [main]
+  pull_request:
+    branches: [main]
+  schedule:
+    - cron: '23 4 * * 1'
+  workflow_dispatch:
+
+permissions:
+  actions: read
+  contents: read
+  security-events: write
+
+concurrency:
+  group: codeql-${{ github.ref }}
+  cancel-in-progress: true
+
+jobs:
+  analyze:
+    name: Analyze (${{ matrix.language }})
+    runs-on: ubuntu-latest
+    timeout-minutes: 30
+    strategy:
+      fail-fast: false
+      matrix:
+        language:
+          - python
+          - javascript-typescript
+
+    steps:
+      - name: Checkout code
+        uses: actions/checkout@34e114876b0b11c390a56381ad16ebd13914f8d5 # v4
+
+      - name: Initialize CodeQL
+        uses: github/codeql-action/init@ce64ddcb0d8d890d2df4a9d1c04ff297367dea2a # v3
+        with:
+          languages: ${{ matrix.language }}
+
+      - name: Perform CodeQL Analysis
+        uses: github/codeql-action/analyze@ce64ddcb0d8d890d2df4a9d1c04ff297367dea2a # v3
+        with:
+          category: /language:${{ matrix.language }}