add github action

.github/workflows/main.yml

@@ -0,0 +1,22 @@
+name: Build release on tag
+on: push
+  tags:
+    - '*'
+jobs:
+  gradle:
+    strategy:
+      matrix:
+        os: [ubuntu-latest, macos-latest, windows-latest]
+    runs-on: ${{ matrix.os }}
+    steps:
+    - uses: actions/checkout@v2
+    - uses: actions/setup-java@v2
+      with:
+        distribution: temurin
+        java-version: 11
+
+    - name: Setup Gradle
+      uses: gradle/gradle-build-action@v2
+
+    - name: Execute Gradle build
+      run: ./gradlew build