Manager refactor, part 1 (#4298)

* Move BackupDatabase and AnonymiseDatabase to internal/manager
* Rename config.Instance to config.Config
* Rename FFMPEG
* Rework manager and initialization process
* Fix Makefile
* Tweak phasher
* Fix config races
* Fix setup error not clearing

internal/api/routes_studio.go

@@ -24,13 +24,6 @@ type studioRoutes struct {
 	studioFinder StudioFinder
 }
 
-func getStudioRoutes(repo models.Repository) chi.Router {
-	return studioRoutes{
-		routes:       routes{txnManager: repo.TxnManager},
-		studioFinder: repo.Studio,
-	}.Routes()
-}
-
 func (rs studioRoutes) Routes() chi.Router {
 	r := chi.NewRouter()