Tlon desktop: move Talk functionality into main app + sidebar updates

[latter-bolden]

Adds the ability to access the core Talk sidebar from within the main app on desktop. Overhauls the way the Sidebar looks, adds Search for group/message lists, adds flow for desktop DM creation, etc.
Tested locally against self & hosted ships.

Fixes LAND-1513
Fixes LAND-1522

[linear]

LAND-1513 DMs: move messaging into Tlon/Groups on Desktop

[arthyn]

lgtm, a few suggestions/comments

[linear]

LAND-1522 talk: create with deprecation message

[mrozanski]

Found while testing this branch:

Desktop, Groups, chat, Clicking on a sigil of a message's author
Expected:
stay in the same browser tab/window, open DM UI in the Messages app nav section
For example: https://localhost:3000/apps/groups/dm/~nocsyx-lassul
Observed:
New browser tab pointing to https://localhost:3000/apps/talk/dm/~nocsyx-lassul

Note: Desktop browser in small (mobile) size does the same.
Haven't tested from the mobile app.

[mrozanski]

I’ve noticed that when I click on an item in Activity that opens a group chat, if then I click the back arrow at the top of the side nav, I’m taken to the Groups home with no contents in the main pane. I would expect to go back to Activity instead.

On mobile and if the activity belongs to a thread this is more noticeable because clicking on < sends me to the main thread of that channel, then to the group home, and then to groups.
The behavior is probably designed like this and it would make sense that I can navigate back that way in other circumstances. But when coming from the activity list, I personally prefer to go back to that list in one step, as I’d most likely be catching up with activity in general.

[mrozanski]

I assume it is expected (found the same in Figma) but noting that the Groups icon is now a house instead of the one currently being used.

[mrozanski]

Messages > Filter icon next to Direct Messages (drop down)
"Group Talk Channels" doesn't sound right.

Maybe "Group channels"?

[mrozanski]

Member links in Chat info point to talk URL

Opening a multi-DM, clicking on the three dots at the top > Chat info

[mrozanski]

Comments verified.
Approving.