Create gradlew.build

Author: roy5823

.github/workflows/gradlew.build

@@ -0,0 +1,25 @@
+name: Android CI
+
+on: [push, pull_request]
+
+jobs:
+  build:
+    runs-on: ubuntu-latest
+
+    steps:
+    - name: Checkout repository
+      uses: actions/checkout@v2
+
+    - name: Set up JDK
+      uses: actions/setup-java@v2
+      with:
+        java-version: '11'
+
+    - name: Build with Gradle
+      run: ./gradlew build
+
+    - name: Upload build artifacts
+      uses: actions/upload-artifact@v2
+      with:
+        name: build-artifacts
+        path: path/to/artifacts