docs(readme): add ci badge

README.md

@@ -26,7 +26,7 @@
 *** for contributors-url, forks-url, etc. This is an optional, concise syntax you may use.
 *** https://www.markdownguide.org/basic-syntax/#reference-style-links
 -->
-
+![CI](https://img.shields.io/github/actions/workflow/status/bosun-ai/swiftide/test.yml?style=flat-square)
 [![Crate Badge]][Crate]
 [![Docs Badge]][API Docs]
 [![Contributors][contributors-shield]][contributors-url]