Introduce CodeQL security vulnerability analysis (#573)

See https://codeql.github.com

.github/workflows/codeql.yml

@@ -0,0 +1,44 @@
+# Analyzes the code using GitHub's default CodeQL query database.
+# Identified issues are registered with GitHub's code scanning dashboard. When
+# a pull request is analyzed, any offending lines are annotated. See
+# https://codeql.github.com for details.
+name: CodeQL analysis
+on:
+  pull_request:
+  push:
+    branches: [ master ]
+  schedule:
+    - cron: '0 4 * * 1'
+permissions:
+  contents: read
+jobs:
+  analyze:
+    strategy:
+      matrix:
+        language: [ java, ruby ]
+    permissions:
+      contents: read
+      security-events: write
+    runs-on: ubuntu-22.04
+    steps:
+      - name: Check out code
+        uses: actions/[email protected]
+        with:
+          persist-credentials: false
+      - name: Set up JDK
+        uses: actions/[email protected]
+        with:
+          java-version: 17.0.6
+          distribution: temurin
+          cache: maven
+      - name: Initialize CodeQL
+        uses: github/codeql-action/[email protected]
+        with:
+          languages: ${{ matrix.language }}
+      - name: Perform minimal build
+        if: matrix.language == 'java'
+        run: mvn -T1C clean install -DskipTests -Dverification.skip
+      - name: Perform CodeQL analysis
+        uses: github/codeql-action/[email protected]
+        with:
+          category: /language:${{ matrix.language }}