Add plumbing for hosted projects. This will currently show them if they
exist
but provides no UX to create/rename/delete them.
Also changed the `ChannelId` type to not auto-cast to u64; this avoids
type
confusion if you have multiple id types.
Release Notes:
- N/A
* Put the newest notifications at the top
* Have at most 1 notification toast, which is non-interactive,
but focuses the notification panel on click, and auto-dismisses
on a timer.
Conrad Irwin
Max BrunsfeldandMikayla