* Support KStream lifecycle through binding endpoint Introduce the ability for Kafka Streams application's lifecycle management through actuator binding endpoints. Kafka Streams only supports STOP and START operations. PAUSE/RESUME operations that is available in regular message channel based binders are not available in Kafka Streams binder. Adding tests and docs. Resolves https://github.com/spring-cloud/spring-cloud-stream-binder-kafka/issues/1038 Resolves https://github.com/spring-cloud/spring-cloud-stream-binder-kafka/issues/850 https://stackoverflow.com/questions/60282225/why-doesnt-kstreambinder-have-a-lifecycle-for-defaultbinding * Addressing PR review comments * Addressing PR review * cleanup unused code