View a remote server's timeline

Qoto.org has a cool feature that lets you view the timeline of a remote server. It looks like this:

You can get to this view by clicking the 3 dots on a status:

Behind the scenes all it's doing is pulling the public timeline with an extra filter on the domain:

I was curious to see how easy it'd be to do in Pleroma and just spent a few minutes playing around with it. If we decide we want this I'll clean it up and add tests.