Update use case count badge to 19

Author: github-actions[bot]

README.md

@@ -11,7 +11,7 @@
 <br />
 
 [![Awesome](https://awesome.re/badge.svg)](https://awesome.re)
-![Use Cases](https://img.shields.io/badge/usecases-15-blue?style=flat-square)
+![Use Cases](https://img.shields.io/badge/usecases-19-blue?style=flat-square)
 ![Last Update](https://img.shields.io/github/last-commit/hesamsheikh/awesome-openclaw-usecases?label=Last%20Update&style=flat-square)
 </div>