Wire the `AxonServerConnector` instead of the `AxonServerCommandBus`

[smcvb]

Enhancement Description

With the replacement of the AxonServerCommandBus with the AxonServerConnector in #3003, we greatly simplified the command dispatching logic in Axon Framework with Axon Server. However, that pull request did not cover for the configuration logic yet. To make the new solution usable throughout, we should ensure it is wired.

Current Behaviour

There is no AxonServerCommandBus and no AxonServerConnector configured in Axon Framework.

Wanted Behaviour

An easily configurable Axon Server version of the CommandBus.