docs(readme): adds a publication badge to npm

Author: TENSIILE

README.md

@@ -5,6 +5,8 @@
         <img src="https://img.shields.io/npm/v/@saborter/server?color=red&label=npm%20package" /></a>
 <a href="https://www.npmjs.com/package/@saborter/server" alt="Npm downloads">
         <img src="https://img.shields.io/npm/dm/@saborter/server.svg" /></a>
+<a href="https://github.com/TENSIILE/saborter-server/actions/workflows/publish.yml" alt="Release">
+        <img src="https://github.com/TENSIILE/saborter-server/actions/workflows/publish.yml/badge.svg" /></a>
 <a href="https://github.com/TENSIILE/saborter-server/actions/workflows/ci.yml" alt="CI">
         <img src="https://github.com/TENSIILE/saborter-server/actions/workflows/ci.yml/badge.svg" /></a>
 <a href="https://github.com/TENSIILE/saborter-server/blob/develop/LICENSE" alt="License">