Add PMD and precommit for format and license header checking. (#1017)

Use package goal as project doesn't support earlier lifecycle phases.

.github/workflows/ci.yml

@@ -35,6 +35,22 @@ env:
   GITHUB_ACTIONS_DEPLOY_TIMEOUT: 60
 
 jobs:
+  pre_commit:
+    runs-on: ubuntu-latest
+    outputs:
+      java_version: ${{ env.JAVA_VERSION }}
+      java_version_supported_by_repo: ${{ env.JAVA_VERSION_SUPPORTED_BY_REPO }}
+    steps:
+      - uses: Alfresco/alfresco-build-tools/.github/actions/setup-java-build@v7.0.0
+      - uses: actions/checkout@v4
+        with:
+          fetch-depth: 0
+      - id: changed-files
+        uses: Alfresco/alfresco-build-tools/.github/actions/github-list-changes@v7.0.0
+        with:
+          write-list-to-env: true
+      - uses: Alfresco/alfresco-build-tools/.github/actions/pre-commit@v7.0.0
+
   veracode_sca:
     name: "Veracode - Source Clear Scan (SCA)"
     runs-on: ubuntu-latest
@@ -119,6 +135,21 @@ jobs:
           name: Veracode Pipeline-Scan Results (Human Readable)
           path: readable_output.zip
 
+  pmd_scan:
+    name: "PMD Scan"
+    runs-on: ubuntu-latest
+    if: >
+      github.event_name == 'pull_request' &&
+      !contains(github.event.head_commit.message, '[skip pmd]') &&
+      !contains(github.event.head_commit.message, '[skip tests]')
+    steps:
+      - uses: actions/checkout@v4
+      - uses: Alfresco/alfresco-build-tools/.github/actions/free-hosted-runner-disk-space@v7.0.0
+      - uses: Alfresco/alfresco-build-tools/.github/actions/setup-java-build@v7.0.0
+      - uses: Alfresco/ya-pmd-scan@v4.1.0
+        with:
+          classpath-build-command: "mvn -ntp package -DskipTests"
+
   build_and_test:
     name: "Core & Base Snapshot deployment"
     runs-on: ubuntu-latest