feat(ai): add sample repo

Author: sivaprasadreddy

docs/spring-boot-impl.md

@@ -1,6 +1,10 @@
 # Tomato Architecture - Spring Boot
 
-A reference implementation of Tomato using Spring Boot.
+1. A reference implementation of Tomato using Spring Boot.
 
 [https://github.com/tomato-architecture/tomato-architecture-spring-boot-demo](https://github.com/tomato-architecture/tomato-architecture-spring-boot-demo)
 
+2. A multi-module Spring Boot application supporting WebApp, REST API, and CLI.
+
+[https://github.com/tomato-architecture/url-shortener-tomato-architecture](https://github.com/tomato-architecture/url-shortener-tomato-architecture)
+