Should we support multi-router environments?

[stijnmoreels]

If multiple Azure Message Pumps are added to the application (will all be registered as hosted services), they will all share the same message router. This is the case also for the message handlers, as they can be installed on a later time, all the message handlers (for both pumps) will be traversed when trying to process the message.

Was wondering, should we support something like 'scoped' message routing/handler where each pump has its own set of message handlers and a single router?

In Azure Functions, this is an even harder problem, bc there's no relationship between a registered function and the message handler(s)/router like there is with the pump, so we could skip that setup for now.