Add continuous integration GitHub action

The action builds and tests the code base by using mvn verify on every
pull request and git push.

Author: cguglielmo

.github/workflows/ci.yml

@@ -0,0 +1,27 @@
+name: CI
+
+on:
+  push:
+    branches: [ "releases/11.0" ]
+  pull_request:
+    branches: [ "releases/11.0" ]
+
+jobs:
+  build:
+    runs-on: ubuntu-latest
+    container: bsisoftware/scout-maven-chrome:mvn-3.6.3-node-12.18.4
+    steps:
+      - uses: actions/checkout@v3
+      - name: Build with Maven
+        run: mvn -f org.eclipse.scout.rt/pom.xml clean verify -U -B -e -Dmaster_enforcerCheck_skip=true -Dmaster_node_dir=${NODE_HOME}/bin -Dscout.excludeTestCategories=org.eclipse.scout.rt.testing.platform.testcategory.ResourceIntensiveTest
+      - name: Publish Test Report
+        uses: mikepenz/action-junit-report@v5
+        if: success() || failure() # always run even if the previous step fails
+        with:
+          fail_on_failure: true
+          report_paths: |
+            **/target/surefire-reports/TEST-*.xml
+            **/target/karma-reports/**/test-results.xml
+          check_name: |
+            JUnit tests
+            Jasmine tests