Add tagged release workflow

.github/workflows/tagged_release.yml

@@ -0,0 +1,39 @@
+# This workflow will build a Java project with Maven when a tag is pushed
+# For more information see: https://help.github.com/actions/language-and-framework-guides/building-and-testing-java-with-maven
+---
+name: Tagged Release
+on:
+  push:
+    tags:
+      - "v*"
+jobs:
+  build:
+    runs-on: ubuntu-latest
+    steps:
+    - uses: actions/checkout@v2
+    - run: |
+        git fetch --no-tags --prune --depth=1 origin +refs/heads/*:refs/remotes/origin/*
+    - run: echo ::set-env name=PULL_NUMBER::$(echo "$GITHUB_REF" | awk -F / '{print $3}')
+      shell: bash
+    - name: Set up JDK 11
+      uses: actions/setup-java@v1
+      with:
+        java-version: 11
+    - name: Build with Maven
+      run: |
+        mvn install --file notifyme-sdk-backend/pom.xml;
+        mvn springboot-swagger-3:springboot-swagger-3 -f notifyme-sdk-backend/notifyme-sdk-backend-ws/pom.xml
+      env:
+        TESTCONTAINERS_RYUK_DISABLED: true
+    - name: shasum
+      run: shasum -a 256 notifyme-sdk-backend/notifyme-sdk-backend-ws/target/notifyme-sdk-backend-ws.jar > notifyme-sdk-backend/notifyme-sdk-backend-ws/target/notifyme-sdk-backend-ws.sha256
+      shell: bash
+    - name: "Create new release"
+      uses: "marvinpinto/action-automatic-releases@latest"
+      with:
+        repo_token: "${{ secrets.GITHUB_TOKEN }}"
+        prerelease: false
+        files: |
+          notifyme-sdk-backend/notifyme-sdk-backend-ws/target/notifyme-sdk-backend-ws.jar
+          notifyme-sdk-backend/notifyme-sdk-backend-ws/target/notifyme-sdk-backend-ws.sha256
+          notifyme-sdk-backend/notifyme-sdk-backend-ws/generated/swagger/swagger.yaml