Finally get to resolve scrobbling music from Jellyfin. This may lead to
other issues, in fact now videos seem to sometimes create duplicate
scrobbles. But music can be scrobbled now from Jellyfin web or Finamp
successfully.
Turns out trying to not resume in-progress Scrobbles is super painful.
Maybe I'll come up with a better idea later, but for now, I'd rather
just resurrect old paused scrobbles of past tracks, rather than
completely mess up all other aspects of scrobbling.
If you send Track data from the Jellyfin Webhook plugin, we'll do the
right thing with it. Lots more to do to clean this up, but it also
involved moduralizing the code for scrobbling so it's a little simpler
to understand what's going on.
