Add Sonar to run in CI

Author: ThomasPerkins1123

.github/workflows/test.yml

@@ -28,7 +28,9 @@ jobs:
       run: mvn spotless:check
 
     - name: Run Unit and Integration Tests
-      run: mvn install
+      env:
+        SONAR_TOKEN: ${{ secrets.SONAR_TOKEN }}
+      run: mvn install org.sonarsource.scanner.maven:sonar-maven-plugin:sonar
 
   release-check:
     if: github.event_name == 'pull_request' && github.base_ref == 'main'

pom.xml

@@ -37,6 +37,9 @@ limitations under the License.
     <google.java.format.version>1.17.0</google.java.format.version>
     <gpg.plugin.version>3.2.1</gpg.plugin.version>
     <flatten.plugin.version>1.6.0</flatten.plugin.version>
+    <sonar.projectKey>diffblue_diffblue-sonar-plugin</sonar.projectKey>
+    <sonar.organization>diffblue</sonar.organization>
+    <sonar.host.url>https://sonarcloud.io</sonar.host.url>
   </properties>
 
   <dependencyManagement>