Remove Tautulli dependency for hide_episode_spoilers

[JonnyWong16]

Retrieve the blurred episode artwork directly from the Plex server to remove the Tautulli dependency. Requries PlexAPI 4.8.0 with the updated transcodeImage method (pushingkarmaorg/python-plexapi#845).

The modify_episode_artwork function can also be imported into another script to loop across a library.

Example:

from plexapi.server import PlexServer
from JBOPS.utility.hide_episode_spoilers import modify_episode_artwork

plex = PlexServer('http://127.0.0.1:32400', token='XXXXXXXXXXXXXXXXXXXX')
for tvshow in plex.library.section('TV Shows').all():
    modify_episode_artwork(plex, tvshow.ratingKey, blur=25)