Add CI badge to readme

README.md

 [![Alchemy Logo](https://www.alchemyviewer.org/images/banner.png)](https://www.alchemyviewer.org)
 
 [![Alchemy License](https://img.shields.io/badge/license-LGPL%202.1-blue.svg)](https://raw.githubusercontent.com/nlohmann/json/master/LICENSE.MIT)
+[![pipeline status](https://git.alchemyviewer.org/alchemy/alchemy-next/badges/master/pipeline.svg)](https://git.alchemyviewer.org/alchemy/alchemy-next/-/commits/master)
 
 ## About
 [Alchemy](https://www.alchemyviewer.org) Viewer is a client for Second Life and OpenMetaverse protocol simulators. We focus on creating a smooth and easy to use experience with secure and sane defaults.