Provide a .NET client/ also TypeScript/ to connect to a remote message processing service

[ioancrisan]

• implement this using the MessageBroker on the client
  • the implementation from the previous versions would implement another message processor which would send the messages to server. This is not right, as the client process needs also an intra-process communication. Moreover, messages may be sent to different microservices in the federation/different addresses. Therefore, the approach is to use the MessageBroker for inter-process/inter-app communication, while the MessageProcessor remains the one to handle requests within process.