Add CI workflow

.github/workflows/gradle.yml

@@ -0,0 +1,31 @@
+# This workflow will build a Java project with Gradle
+# For more information see: https://help.github.com/actions/language-and-framework-guides/building-and-testing-java-with-gradle
+
+name: Java CI with Gradle
+
+on: [push, pull_request]
+
+jobs:
+  build:
+
+    runs-on: ubuntu-latest
+
+    steps:
+    - name: Checkout repo
+      uses: actions/checkout@v4.1.1
+      with:
+        fetch-depth: 0
+    - name: Validate Gradle wrapper
+      uses: gradle/wrapper-validation-action@v2.1.1
+    - name: Set up JDK 1.8
+      uses: actions/setup-java@v4.0.0
+      with:
+        distribution: 'temurin'
+        java-version: 17
+    - name: Build with Gradle
+      run: ./gradlew build
+    - name: Upload a build artifact
+      uses: actions/upload-artifact@v4.3.1
+      with:
+        name: Package
+        path: build/libs