Improve the list of opened chats #194
Description
Problem
When it comes to the UX for the multichat, it would be great to find a way to not have the chats all be listed in the panel. Otherwise it can get crowded very quickly:
jupyterlite-ai-many-chats.mp4
Proposed Solution
Maybe the list could be moved to a drop-down in the toolbar next to the plus button?
Or, have a way to collapse the list of chats so that the current chat takes the full height of the panel.
Additional context
The multichat feature was added in #169