Media downloading indexing options (round 2)

[kieraneglin]

What's new?

Adds a lot of new options to the MediaProfile model, one option to the Source model, and some filepath trackers to the MediaItem model. For each of these options, you can assume the appropriate option builder(s)/metadata parser/views have been updated accordingly:

New fields on MediaProfile

• download_thumbnail (boolean)
• embed_thumbnail (boolean)
• download_metadata (boolean)
• embed_metadata (boolean)
• shorts_behaviour (string enum)
  • Controls whether to exclude shorts, download only shorts, or not treat them differently (default)
• livestream_behaviour (string enum)
  • Same as above but for livestreams

New field on Source

• download_media (boolean)
  • Controls whether a source actually downloads things or just indexes content (ostensibly for future download)

New fields on MediaItem

• thumbnail_filepath (string)
• metadata_filepath (string)

Other additions:

• generally, adds a workflow to parse/include options for the media indexing task
• adds IndexOptionBuilder to work towards the above

What's changed?

• enqueue_pending_media_downloads and the download worker now respect the source's download_media option, running a no-op if media shouldn't be downloaded
• get_video_ids can now take a source instead of just a URL. When given a source, options may be applied to the yt-dlp call as appropriate

What's fixed?

N/A

Any other comments?

N/A