ci: Add github actions

.github/workflows/gradle.yml

@@ -0,0 +1,26 @@
+name: Gradle Build
+
+on: [push, pull_request]
+
+jobs:
+  build:
+    runs-on: ubuntu-latest
+
+    steps:
+    - name: Checkout Repository
+      uses: actions/checkout@v3
+
+    - name: Set up JDK 17
+      uses: actions/setup-java@v3
+      with:
+        java-version: 17
+        distribution: 'temurin'
+        cache: 'gradle'
+
+    - name: Build with Gradle
+      uses: nick-invision/retry@v2
+      with:
+        timeout_minutes: 5
+        max_attempts: 2
+        command: ./gradlew clean build
+