[Feature Request] Add item to offline session after creation

[byamagata]

Added this as an "Idea" in the discussions section, but I don't know if I am supposed to also create this here. (Copy Paste from the idea):

Idea:
It would be great to be able to add a work item to a session in progress. Especially for Offline poker sessions that span several days.

Use Case:
Scrum Master starts offline planning session on monday. Tuesday, the PO realizes that one of the high priority items is not in the planning poker session, but people have already started voting. Is easily able to add a new item to the session, and notify everyone that a new item has been added.