Add CodeQL static analysis

Author: Your Name

.github/workflows/codeql.yml

@@ -0,0 +1,41 @@
+name: CodeQL
+
+on:
+  pull_request:
+    branches:
+      - main
+  push:
+    branches:
+      - main
+
+permissions:
+  actions: read
+  checks: write
+  contents: read
+  security-events: write
+
+jobs:
+  analyze:
+    name: Analyze
+    runs-on: ubuntu-latest
+
+    steps:
+      - name: Checkout
+        id: checkout
+        uses: actions/checkout@11bd71901bbe5b1630ceea73d27597364c9af683 # v4.2.2
+
+      - name: Initialize CodeQL
+        id: initialize
+        uses: github/codeql-action/init@1a7989f3955e0c69f0e0ccc14aee54a387a0fd31 # v3.28.9
+        with:
+          queries: security-extended 
+          languages: TypeScript
+          source-root: src
+
+      - name: Autobuild
+        id: autobuild
+        uses: github/codeql-action/autobuild@1a7989f3955e0c69f0e0ccc14aee54a387a0fd31 # v3.28.9
+
+      - name: Perform CodeQL Analysis
+        id: analyze
+        uses: github/codeql-action/analyze@1a7989f3955e0c69f0e0ccc14aee54a387a0fd31 # v3.28.9