Added GH workflow to publish artifacts to BinTray

.github/workflows/bintray_release_version.yml

@@ -0,0 +1,29 @@
+# This workflow deploy the packages to bintray
+
+name: Build and ship to bintray
+
+#on:
+#    push:
+#        tags:
+#            - "v*"
+on:
+    release:
+        types: [created]
+
+jobs:
+    publish:
+        runs-on: ubuntu-latest
+        steps:
+            - uses: actions/checkout@v2
+            - name: Set up Java 11
+              uses: actions/setup-java@v1
+              with:
+                  java-version: 11
+                  server-id: bintray
+                  server-username: MAVEN_USERNAME
+                  server-password: MAVEN_PASSWORD
+            - name: Publish package
+              run: mvn --batch-mode deploy
+              env:
+                  MAVEN_USERNAME: ${{ secrets.BINTRAY_USERNAME }}
+                  MAVEN_PASSWORD: ${{ secrets.BINTRAY_TOKEN }}

README.md

@@ -1,3 +1,4 @@
+![Java CI with Maven](https://github.com/moquette-io/moquette/workflows/Java%20CI%20with%20Maven/badge.svg?branch=master)
 
 ## Moquette Project