Reviews, Extras, and Online Media Source Options

[blacktwin]

Adding support for Plex's newly added Reviews.
Adding support for finding Extras (related hub information from videos) in videos.
Adding support for finding Online Media Sources related information from videos. Tracks found on Tidal from video.

Fixes#564

[blacktwin]

Draft until I can add some tests. May want to add a toggle for the Online Media Sources if it isn't already available.

[jfenton]

Hi, is it possible or intended to stream/download Trailers?

I note that Extras are Playable and can be .play()'d, but it's not possible to:
.download()
(AttributeError: 'Extra' object has no attribute '_prettyfilename')
nor
.getStreamURL()
(plexapi.exceptions.Unsupported: Fetching stream URL for clip is unsupported.)

[blacktwin]

.download() won't work without some overhauling of the method. The error of _prettyfilename not being present is because there isn't a file to pull a filename from. .getStreamURL() will work if you simply add clip to the supported types within the getStreamURL method. From there you can use the url to download the trailer.

Downloading trailers/extras is outside the scope of this PR. This PR is just adding support for getting to some of Plex's new features. If you have a bug, request, or question having to do with this project please create an Issue.

[mabuckman]

Having the ability to opt out of media sources would be great 👍

Requested changes implemented