[LBRY/Odysee] workaround for the 1000 item API-limit

[Synarp]

Description of your pull request and other information

The API used to enumerate videos on lbry/odysee is limited to 1000 Videos. I found a workaround for this problem here: https://www.reddit.com/r/lbry/comments/tpc7yz/get_list_of_all_videos_uploaded_by_user/

This works by filtering the videos such that the already enumerated ones are excluded.

If the videos are requested to be sorted newest first(which is the default), the workaround is used and otherwise a warning is emitted(yt-dlp silently limiting or not limiting the number of Videos it can find depending on the ordering would be confusing and unexpected).

Fixes #1296 (although this wasn't seen as a bug)

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