Fixes #42
Careful: The directory structure for "Leaving Soon" was changed slightly.
It is recommended you clean out your directories manually ONCE before updating.
I kept the parent directory as /leaving-soon/tv and /leaving-soon/movies, but each cleanup schedule (media and tag based) get their own sub folder inside these where they place their symlinks.
I thought about doing it the other way around, i.e. /leaving-soon/media/tv, but this would've required changing the code to handle libraries altogether (i.e. updating the paths in Jellyfin constantly, potentially causing library scans) and users migrating would've had to delete the library in Jellyfin to keep Janitorr functional.