Add Integration Tests badge

README.md

@@ -2,6 +2,7 @@
 
 ## We stand with 🇺🇦
 
+[![Mailcow Integration Tests](https://github.com/mailcow/mailcow-dockerized/actions/workflows/integration_tests.yml/badge.svg?branch=master)](https://github.com/mailcow/mailcow-dockerized/actions/workflows/integration_tests.yml)
 [![Translation status](https://translate.mailcow.email/widgets/mailcow-dockerized/-/translation/svg-badge.svg)](https://translate.mailcow.email/engage/mailcow-dockerized/)
 [![Twitter URL](https://img.shields.io/twitter/url/https/twitter.com/mailcow_email.svg?style=social&label=Follow%20%40mailcow_email)](https://twitter.com/mailcow_email)