Add CI workflow configuration

.github/workflows/ci.yml

@@ -0,0 +1,38 @@
+name: Java CI with Gradle
+
+on:
+  push:
+    branches: [main]
+  pull_request:
+    branches: [main]
+
+jobs:
+  build:
+    runs-on: ubuntu-latest
+
+    steps:
+      - name: Checkout code
+        uses: actions/checkout@v3
+
+      - name: Set up JDK 17
+        uses: actions/setup-java@v3
+        with:
+          java-version: '17'
+
+      - name: Build with Gradle
+        run: ./gradlew build
+
+      - name: Run tests
+        run: ./gradlew test
+
+      - name: Upload test results
+        uses: actions/upload-artifact@v3
+        with:
+          name: test-results
+          path: build/test-results/test
+
+      - name: Upload code coverage report
+        uses: actions/upload-artifact@v3
+        with:
+          name: jacoco-report
+          path: build/reports/jacoco/test/html