Add CodeQL

.github/workflows/code-scanning.yml

@@ -0,0 +1,43 @@
+name: 'Code Scanning'
+
+on:
+  push:
+    branches:
+      - master
+      - '!dependabot/**'
+  pull_request:
+    branches:
+      - master
+      - '!dependabot/**'
+  schedule:
+    - cron: '0 7 * * 1'
+  workflow_dispatch:
+
+jobs:
+  analyze:
+    name: Analyze
+    runs-on: ubuntu-latest
+    permissions:
+      actions: read
+      contents: read
+      security-events: write
+
+    steps:
+      - name: Checkout repository
+        uses: actions/checkout@v3
+        with:
+          persist-credentials: false
+
+      - name: Initialize CodeQL
+        uses: github/codeql-action/init@v2
+        with:
+          languages: 'javascript'
+          queries: +security-and-quality
+
+      - name: Autobuild
+        uses: github/codeql-action/autobuild@v2
+
+      - name: Perform CodeQL Analysis
+        uses: github/codeql-action/analyze@v2
+        with:
+          category: '/language:javascript'