* Demonstrate `@Publisher` with an `@EventListener`
The `@EventListener` from Spring Framework is a good tool for POJO configuration
to subscribe to events from an `ApplicationContext`.
The `@Publisher` is an AOP tool to publish a `Message` from POJO method call.
* Add a test and docs to demonstrate how the `@Publisher` can be used together with an `@EventListener`
* Add `@Publisher` with a `@RabbitListener` sample in docs
* * Fix FQCN for `@Queue` in the `AmqpTests`