add support for TV Tropes

[zephiii]

service name

TV Tropes

service description

While the service mainly focuses on tropes in media, it also includes video examples of certain tropes, and there isn't a user-friendly way to download them. The videos are stored rather weirdly on the server, but it shouldn't be that hard to combine them together in the full download.

link samples

https://tvtropes.org/pmwiki/video_example.php?video_id=zafwcu

additional context

Checking the console shows a link to a playlist file that links to a different file for each resolution that links to different segments of each video (about 4 seconds each afaik, labelled "video0" onwards ("video0.ts", "video1.ts", "video2.ts", etc.)