Classpath scanners performance

[sleipnir]

While cloudstate java support does not allow better interaction with injection containers, we will need to improve our ability to identify the entity classes annotated with @EventSourcedEntity and CrdtEntity.

We can, via configuration, indicate what types of entities are needed within the context of execution so that we go through the classpath only as much as necessary

[sleipnir]

We added the possibility for the customer to define the name of the package that his entity role was created. This way we can use Spring's available resources to scan classes instead of using the classgraph library, thereby reducing the application load time by more than one second on average.
In the future we will be able to remove the dependency of the classgraph entirely. But first we need to receive more feedback from the community