Provide a helper method to auto-import and register shared integration events from module

[subhashb]

Most applications generate two types of events: Domain Events and Integration Events.
Domain events are generated and consumed within the bounded context (BC), while integration events are for inter-BC communication. It follows that integration event structures are shared between BCs.

In Protean, sharing events would mean storing them as a separate module (shared?) and importing them into both BCs.

A helper function that would accept the shared module and auto-register the events would be helpful.