adding true double puppet functionality

[ghost]

Currently the framework does not support puppeting the matrix user, that is being bridged.

That means that using the framework also involves keeping track of an additonal matrix client/api in order to puppet this user as well. It also requires own code to decide in which way an event is supposed to be handled - either relaying the message via the framework (relay_service_message) or relaying it as the real user (again, having to write own code for submitting messages and room events via the matrix api since the framework cannot masquerade a user not in the user-namespace).

Do you have any plans or ideas regarding this already ?