Inject purpose build interfaces into BackgroundListenerThread instead SocketFactory

[tkilias]

Background

• Currently, we inject the SocketFactory into the BackgroundListenerThread and use it to create all the Sockets we need.
• However, this makes unit tests for it very difficult, because we need to assume a specific order for the creation of the different sockets
• It is better to inject purpose build interfaces into BackgroundListenerThread
  • PeerSenderFactory for creating PeerSender which can send messages to other Peers
  • ForegroundThreadSender for communicating with ForegroundThread
  • MessageReveiver for receiving messages from the Peers and the ForegroundThread

### Dependencies
- [ ] https://github.com/exasol/advanced-analytics-framework/issues/132
- [ ] https://github.com/exasol/advanced-analytics-framework/issues/133
- [ ] https://github.com/exasol/advanced-analytics-framework/issues/134