ci: add codeql scanning workflow (#108)

.github/workflows/codeql.yml

@@ -0,0 +1,56 @@
+name: CodeQL
+
+on:
+  push:
+    branches: [main, master]
+    paths-ignore:
+      - 'docs/**'
+      - 'README.md'
+      - 'README_EN.md'
+      - 'CONTRIBUTING.md'
+      - 'SECURITY.md'
+      - 'CODE_OF_CONDUCT.md'
+  pull_request:
+    paths-ignore:
+      - 'docs/**'
+      - 'README.md'
+      - 'README_EN.md'
+      - 'CONTRIBUTING.md'
+      - 'SECURITY.md'
+      - 'CODE_OF_CONDUCT.md'
+  schedule:
+    - cron: '19 18 * * 0'
+
+permissions:
+  actions: read
+  contents: read
+  security-events: write
+
+concurrency:
+  group: ${{ github.workflow }}-${{ github.event.pull_request.number || github.ref }}
+  cancel-in-progress: true
+
+jobs:
+  analyze:
+    name: Analyze (JavaScript/TypeScript)
+    runs-on: ubuntu-latest
+    timeout-minutes: 30
+    strategy:
+      fail-fast: false
+      matrix:
+        language: ['javascript-typescript']
+
+    steps:
+      - name: Checkout
+        uses: actions/checkout@v6
+
+      - name: Initialize CodeQL
+        uses: github/codeql-action/init@v4
+        with:
+          languages: ${{ matrix.language }}
+          build-mode: none
+
+      - name: Analyze
+        uses: github/codeql-action/analyze@v4
+        with:
+          category: /language:${{ matrix.language }}