Add jacoco workflow

Update jacoco version

.github/workflows/jacoco-badge.yml

@@ -0,0 +1,46 @@
+name: Coverage
+
+on:
+  push:
+    branches: [ master ]
+
+jobs:
+  build:
+    runs-on: ubuntu-latest
+
+    steps:
+    - uses: actions/checkout@v3
+
+    - name: Set up JDK 21
+      uses: actions/setup-java@v3
+      with:
+        distribution: 'adopt'
+        java-version: 21
+
+    - name: Build with Maven
+      run: mvn -B test
+
+    - name: Generate JaCoCo Badge
+      id: jacoco
+      uses: cicirello/[email protected]
+      with:
+        jacoco-csv-file: radiobrowser4j/target/site/jacoco/jacoco.csv
+
+    - name: Log coverage percentage
+      run: |
+        echo "coverage = ${{ steps.jacoco.outputs.coverage }}"
+        echo "branch coverage = ${{ steps.jacoco.outputs.branches }}"
+
+    - uses: casperdcl/push-dir@v1
+      with:
+        message: update static site
+        branch: gh-pages
+        dir: .github/badges
+        history: false
+        nojekyll: true
+
+    - name: Upload JaCoCo coverage report
+      uses: actions/upload-artifact@v3
+      with:
+        name: jacoco-report
+        path: target/site/jacoco/

pom.xml

@@ -146,7 +146,7 @@
       <plugin>
         <groupId>org.jacoco</groupId>
         <artifactId>jacoco-maven-plugin</artifactId>
-        <version>0.8.8</version>
+        <version>0.8.11</version>
         <executions>
           <execution>
             <goals>