added job and configuration for publishing the artifacts on github packages

.github/workflows/release.yml

@@ -0,0 +1,17 @@
+name: Publish package to GitHub Packages
+on:
+  release:
+    types: [created]
+jobs:
+  publish:
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v2
+      - name: Set up Java for publishing to GitHub Packages
+        uses: actions/setup-java@v1
+        with:
+          java-version: 1.8
+      - name: Publish to GitHub Packages
+        run: mvn -f abstracto-application/pom.xml -B deploy
+        env:
+          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}