add github action for build and publishToMavenLocal

.github/workflows/kotlin-build.yml

@@ -0,0 +1,21 @@
+name: Build
+
+on:
+  push:
+    branches: '*'
+  pull_request:
+    branches: [main]
+
+jobs:
+  build:
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v2
+      - name: Set up JDK 11
+        uses: actions/setup-java@v1
+        with:
+          java-version: 11
+      - name: Grant execute permission for gradlew
+        run: chmod +x gradlew
+      - name: Build with Gradle
+        run: ./gradlew build publishToMavenLocal