ci: add codeql workflow

Author: derklaro

.github/workflows/codeql-analysis.yml

@@ -0,0 +1,45 @@
+name: "CodeQL"
+
+on:
+  pull_request:
+  schedule:
+    - cron: '00 2 * * *'
+
+concurrency:
+  cancel-in-progress: true
+  group: cq-${{ github.event.pull_request.number || github.job }}
+
+jobs:
+  analyze:
+    name: Analyze
+    runs-on: ubuntu-latest
+    if: ${{ !startsWith(github.ref, 'refs/heads/renovate/') }}
+
+    steps:
+      - name: Checkout repository
+        uses: actions/checkout@v4
+
+      - name: Setup java
+        uses: actions/setup-java@v4
+        with:
+          java-version: 24
+          check-latest: true
+          distribution: 'zulu'
+
+      - name: Setup Gradle
+        uses: gradle/actions/setup-gradle@v4
+        with:
+          cache-read-only: true
+          add-job-summary: always
+
+      - name: Initialize CodeQL
+        uses: github/codeql-action/init@v3
+        with:
+          tools: linked
+          languages: 'java'
+
+      - name: Autobuild
+        uses: github/codeql-action/autobuild@v3
+
+      - name: Perform CodeQL Analysis
+        uses: github/codeql-action/analyze@v3