Added CodeQL static scanner

.github/workflows/codeql.yaml

@@ -0,0 +1,81 @@
+#
+# Licensed to the Apache Software Foundation (ASF) under one
+# or more contributor license agreements.  See the NOTICE file
+# distributed with this work for additional information
+# regarding copyright ownership.  The ASF licenses this file
+# to you under the Apache License, Version 2.0 (the
+# "License"); you may not use this file except in compliance
+# with the License.  You may obtain a copy of the License at
+#
+#   http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing,
+# software distributed under the License is distributed on an
+# "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+# KIND, either express or implied.  See the License for the
+# specific language governing permissions and limitations
+# under the License.
+#
+
+name: "CodeQL"
+
+on:
+  push:
+    branches: [ 'master' ]
+  pull_request:
+    # The branches below must be a subset of the branches above
+    branches: [ 'master' ]
+  schedule:
+    - cron: '27 21 * * 4'
+
+jobs:
+  analyze:
+    name: Analyze
+    runs-on: 'ubuntu-latest'
+    timeout-minutes: 360
+    permissions:
+      actions: read
+      contents: read
+      security-events: write
+
+    strategy:
+      fail-fast: false
+      matrix:
+        # CodeQL supports [ 'cpp', 'csharp', 'go', 'java', 'javascript', 'python', 'ruby' ]
+        language: [ 'java-kotlin' ]
+
+    steps:
+      - name: Cache local Maven repository
+        uses: actions/cache@v4
+        timeout-minutes: 5
+        with:
+          path: |
+            ~/.m2/repository/*/*/*
+            !~/.m2/repository/org/apache/pulsar
+          key: ${{ runner.os }}-m2-dependencies-core-modules-${{ hashFiles('**/pom.xml') }}
+          restore-keys: |
+            ${{ runner.os }}-m2-dependencies-core-modules-
+
+      - name: Set up JDK
+        uses: actions/setup-java@v4
+        with:
+          distribution: 'temurin'
+          java-version: 17
+
+      - name: Checkout repository
+        uses: actions/checkout@v4
+
+      # Initializes the CodeQL tools for scanning.
+      - name: Initialize CodeQL
+        uses: github/codeql-action/init@v3
+        with:
+          languages: ${{ matrix.language }}
+
+      - name: Build Java code
+        run: |
+          mvn -B -ntp -Pcore-modules,-main install -DskipTests -Dlicense.skip=true -Drat.skip=true -Dcheckstyle.skip=true
+
+      - name: Perform CodeQL Analysis
+        uses: github/codeql-action/analyze@v3
+        with:
+          category: "/language:${{matrix.language}}"