add github workflow for automatic releases

.github/workflows/release-on-tag.yml

@@ -0,0 +1,19 @@
+name: Create release when creating a tag
+on:
+  create:
+    tags:
+      - '*'
+jobs:
+  build-and-release:
+    runs-on: ubuntu-latest
+    steps:
+      - name: create release
+        id: create_release
+        uses: actions/create-release@v1
+        env:
+          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
+        with:
+          tag_name: ${{ github.ref }}
+          release_name: Release ${{ github.ref }}
+          draft: false
+          prerelease: false