Add Trendshift badge to README (#583)

Author: jabrena

README.md

@@ -1,5 +1,7 @@
 # Cursor AI rules for Java
 
+<a href="https://trendshift.io/repositories/15013" target="_blank"><img src="https://trendshift.io/api/badge/repositories/15013" alt="jabrena%2Fcursor-rules-java | Trendshift" style="width: 250px; height: 55px;" width="250" height="55"/></a>
+
 ## Stargazers over time
 
 [![Stargazers over time](https://starchart.cc/jabrena/cursor-rules-java.svg?variant=adaptive)](https://starchart.cc/jabrena/cursor-rules-java)