build: create CodeQL nightly job

Author: feywind

.github/workflows/codeql.yaml

@@ -0,0 +1,30 @@
+on:
+  schedule:
+    - cron: '0 4 * * *' # Runs every night at 04:00 UTC
+  workflow_dispatch:
+name: CodeQL
+jobs:
+  analyze:
+    name: Analyze
+    runs-on: ubuntu-latest
+    permissions:
+      actions: read
+      contents: read
+      security-events: write
+
+    strategy:
+      fail-fast: false
+      matrix:
+        node: [ 'javascript-typescript' ]
+
+    steps:
+      - name: Checkout repository
+        uses: actions/checkout@v6
+
+      - name: Initialize CodeQL
+        uses: github/codeql-action/init@v3
+        with:
+          languages: ${{ matrix.language }}
+
+      - name: Perform CodeQL Analysis
+        uses: github/codeql-action/analyze@v3