README: Add Github Actions status badges

Author: ferdnyc

README.md

@@ -2,6 +2,10 @@ OpenShot Video Editor is an award-winning free and open-source video editor
 for Linux, Mac, and Windows, and is dedicated to delivering high quality 
 video editing and animation solutions to the world.
 
+## Build Status
+
+**openshot-qt** [![CI Build](https://github.com/OpenShot/openshot-qt/actions/workflows/ci.yml/badge.svg)](https://github.com/OpenShot/openshot-qt/actions/workflows/ci.yml) **libopenshot** [![CI Build](https://github.com/OpenShot/libopenshot/actions/workflows/ci.yml/badge.svg)](https://github.com/OpenShot/libopenshot/actions/workflows/ci.yml) **libopenshot-audio** [![CI Build](https://github.com/OpenShot/libopenshot-audio/actions/workflows/ci.yml/badge.svg)](https://github.com/OpenShot/libopenshot-audio/actions/workflows/ci.yml)
+
 ## Features
 
 * Cross-platform (Linux, Mac, and Windows)