Init Folks in the backgroud to prevent blocking the UI on startup

Fixes #347
5 jobs for wip/347-folks-loading-slow in 37 minutes (queued for 2 seconds)
Status Job ID Name Coverage
  Build
passed #257335
fedora

00:09:49

passed #257336
ubuntu

00:11:27

 
  Test
passed #257337
flatpak

00:23:42

 
  Deploy
passed #257338
review

00:00:42

passed #257339
allowed to fail manual
stop_review

00:01:06