Add sonarcloud support

.github/workflows/build_and_test.yml

@@ -55,6 +55,27 @@ jobs:
           path: |
             rskj-core/build
 
+  sonarcloud:
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v4
+        with:
+          # Disabling shallow clone is recommended for improving relevancy of reporting
+          fetch-depth: 0
+      - name: SonarCloud Scan
+        uses: sonarsource/[email protected] # Ex: v3.1.0, See the latest version at https://github.com/marketplace/actions/sonarcloud-scan
+        env:
+          GH_EVENT: ${{ github.event_name }}
+          GH_PR_NUMBER: ${{ github.event.pull_request.number }}
+          GH_PR_BASE_REF: ${{ github.base_ref }}
+          GH_PR_HEAD_REF: ${{ github.head_ref }}
+          GH_REF: ${{ github.ref }}
+          SONAR_TOKEN: ${{ secrets.SONAR_TOKEN }}
+        with:
+          args: >
+            -Dsonar.branch.name="$GH_REF"
+            -Dsonar.verbose=true
+
   smell-test:
     needs: unit-tests-java17
     runs-on: ubuntu-latest

sonar-project.properties

@@ -0,0 +1,9 @@
+sonar.organization=rsksmart
+sonar.projectKey=rskj
+sonar.host.url=https://sonarcloud.io
+sonar.junit.reportPaths=./rskj-core/build/test-results/
+sonar.coverage.jacoco.xmlReportPaths=./rskj-core/build/reports/jacoco/test/jacocoTestReport.xml
+
+# relative paths to source directories. More details and properties are described
+# in https://sonarcloud.io/documentation/project-administration/narrowing-the-focus/
+sonar.sources=./rskj-core