Add codecov

.github/workflows/ci.yml

@@ -65,3 +65,25 @@ jobs:
       - uses: actions/checkout@v3
       - name: Build with Maven
         run: echo y | mvn clean install -Dskip.gpg=true -Dspotless.apply.skip=true -Dmaven.javadoc.skip=true
+
+  test-coverage:
+    if: github.repository == 'opengoofy/hippo4j'
+    name: Test coverage report
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v3
+      - name: Cache Maven Repos
+        uses: actions/cache@v3
+        with:
+          path: ~/.m2/repository
+          key: hippo4j-maven-third-party-${{ hashFiles('**/pom.xml') }}
+          restore-keys: |
+            hippo4j-maven-third-party-
+      - uses: actions/setup-java@v3
+        with:
+          distribution: 'temurin'
+          java-version: 8
+      - name: Test with Maven
+        run: ./mvnw -T1C -B -ntp clean install cobertura:cobertura -Djacoco.skip=false
+      - name: Upload to Codecov
+        run: bash <(curl -s https://codecov.io/bash)