Add CodeQL security analysis

Author: albond

.github/workflows/codeql.yml

@@ -0,0 +1,29 @@
+name: CodeQL
+
+on:
+  push:
+    branches: [main]
+  pull_request:
+    branches: [main]
+  schedule:
+    - cron: "23 4 * * 1"
+
+permissions:
+  contents: read
+  security-events: write
+
+jobs:
+  analyze:
+    name: Analyze Python
+    runs-on: ubuntu-latest
+    timeout-minutes: 15
+    steps:
+      - name: Check out source
+        uses: actions/checkout@v7
+      - name: Initialize CodeQL
+        uses: github/codeql-action/init@v4
+        with:
+          languages: python
+          build-mode: none
+      - name: Analyze source
+        uses: github/codeql-action/analyze@v4