`Irregular` pseudotype

[StartAutomating]

The Irregular pseudotype should be extended, in order to more easily expose aspects of Irregular.

Irregular core commands

• [ ] #220

Irregular Microservice Types

(see #217)

• [ ] Irregular.Start should start the Irregular service
• [ ] Irregular.Serve should serve a request
• [ ] Irregular.Invoke should invoke a command in Irregular from a request
• [ ] Irregular.OnStatus should handle status changes for Irregular.
• [ ] Irregular.get_404 should get the 404 response.