* test removing consumer
* test removing consumer
* wrapping up
* fix main class
* addressing request changes
* introducing constants for numbers. optimizing imports
* introducing class level constants
* using constant naming conventions
* moved Spring retryable article to own package
* moved Spring retryable article to own package
* implement multiple listeners kafka app demo project
* fix PR comments
* BAEL-6057 - Implementing Retry In Kafka Consumer
(moved code example to new module)
* BAEL-6057 - Implementing Retry In Kafka Consumer
(fix on README.md)
Co-authored-by: Cesare <cesare.valenti@hotmail.com>