Add maven workflow

.github/workflows/maven-publish.yml

@@ -0,0 +1,35 @@
+# This workflow will build a package using Maven and then publish it to GitHub packages when a release is created
+# For more information see: https://github.com/actions/setup-java#apache-maven-with-a-settings-path
+
+name: Maven Package
+
+on:
+  release:
+    types: [created]
+  push:
+    branches:
+      - 1.13plus
+  pull_request:
+    branches:
+      - 1.13plus
+  workflow_dispatch:
+jobs:
+  build:
+
+    runs-on: ubuntu-latest
+
+    steps:
+    - uses: actions/checkout@v2
+    - name: Set up JDK 1.8
+      uses: actions/setup-java@v1
+      with:
+        java-version: 1.8
+        server-id: github # Value of the distributionManagement/repository/id field of the pom.xml
+
+    - name: Build with Maven
+      run: mvn -B package --file pom.xml
+
+    - name: Publish to GitHub Packages Apache Maven
+      run: mvn deploy
+      env:
+        GITHUB_TOKEN: ${{ github.token }}