Add Github Actions CI (#8)

Author: mrsarm

.github/workflows/gradle.yml

@@ -0,0 +1,27 @@
+# This workflow will build a Java project with Gradle and cache/restore any dependencies to improve the workflow execution time
+# For more information see: https://help.github.com/actions/language-and-framework-guides/building-and-testing-java-with-gradle
+
+name: CI with Gradle
+
+on:
+  push:
+    branches: master
+  pull_request:
+
+jobs:
+  build:
+
+    runs-on: ubuntu-latest
+
+    steps:
+    - uses: actions/checkout@v2
+    - name: Set up JDK 11
+      uses: actions/setup-java@v2
+      with:
+        java-version: '11'
+        distribution: 'adopt'
+        cache: gradle
+    - name: Build
+      run: ./gradlew build
+    - name: Publish to Maven local with Gradle
+      run: ./gradlew publishToMavenLocal