Custom Emails on Event Orchestration

Allow the modification of the email on an Event Orchestration in the same way an email integration does on a service.

This adaptation would allow for our teams to more easily adapt to using the Event Orchestration and its full power and stop sendings things directly to a service. We find having less clean email address significantly hinders the chance of an outside team being willing to consider the methodology and will instead just try to email a person directly rather than follow procedure.