We now allow externalizing application events to a variety of message brokers through the addition of Spring Modulith modules for Kafka, AMQP and JMS to a user project's classpath. Which events shall be externalized and how they're supposed to be routed to the message broker can be configured through either annotations or via a configuration API declared as Spring bean.
In case Jackson is on the classpath, we also add auto-configuration to use a Boot-configured ObjectMapper instance with the corresponding message broker client APIs to properly serialize and deserialize messages to JSON.
Added a readme to briefly describe what's contained in the examples. Added Maven Wrapper to all example projects.
Limit the dependencies of the JDBC based example to sole Spring JDBC (dropping the Spring Data integration as it's not needed for the example. Remove unused, JPA-related property
Switch verification of mock beans as Mockito 5.3.0 uses a different MockMaker by default that doesn't add the explicit interface we have previously checked for.
Remove obsolete init- and destroy method declarations from service bean definitions in examples.
