/delegate/request exn message from keripy missing in KERIA

[iFergal]

KERIA has it's own delegating.py implementation - both KERIA and keripy send the delegated inception event.

But keripy also sends an exn message with route /delegate/request on this line. I'm not sure if this is old or not.

I am interested in this exn message (and also if it were there for a delegated rotation event) so that a notification can be listened for to prompt the delegator to confirm signing the interaction event. So I'm curious if I can create a PR to also send this exn message in KERIA.

[kentbull]

This needs to be updated to point to the main branch since the development branches have been deleted or renamed due to the new branching policy.

[iFergal]

Thanks @kentbull updated (and used a githash this time as I should've :P)

Based on more recent Discord convos, I actually think scanning for unapproved events vs using a notification would be better. Since I believe the notification won't appear until the OOBI of the new delegate identifier is scanned by the delegator.