This includes a bunch of small changes to adapt to how atrium-api has changed
over time. They're not functional or interesting, just some type-level
adjustments that are needed.
Some more complicated logic was changed in how profile details are parsed,
since atrium's way of doing things is weird and hard to understand so I just
manually grab stuff from the object map instead of relying on atrium's types.
This is similar to how CBOR parsing is done.
Boring maintenance stuff.
Make the overall design a little more flexible if one wants
to easily implement multiple feeds, and also kinda closer to
the original template provided by Bluesky devs
Aleksei Voronov