Custom manifest naming for persistence with Jackson

Full class names as manifests lead to lot of unnecessary storage overhead and leads to problems if event classes are being refactored into different packages.

It would be very helpful to be able to define custom manifest names like e.g. this:

case class @PersistenceManifest("AbcActor.Name") NameEvent(id: UUID, name: string) extends Event

Ideally, it should be checked on startup if persistence manifest names are unique within the running application.