feat: Idempotent Consumer Microservice Pattern #2683 (#3082)

* added idempotent consumer pattern

* updated doc

* fixed bug in RequestService

* add test converage

* Add test converage to state machine

* renamed module and added code example

pom.xml

@@ -217,6 +217,7 @@
     <module>virtual-proxy</module>
     <module>function-composition</module>
     <module>microservices-distributed-tracing</module>
+    <module>microservices-idempotent-consumer</module>
   </modules>
   <repositories>
     <repository>