[extractor/bilibili] Support interactive videos and course videos

[c-basalt]

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Description of your pull request and other information

Add supports for interactive split-path videos. Fixes #6135
Interactive videos are composed of separate sections that can jump to each other via overlay buttons. Each section is a video with a unique cid but not a unique URL like typical ?p=xxx anthology (webpage uses a cookie to access saved progress on server). This PR extract these interactive videos as playlist results.

Add better error hints for patreon-like "supporter-only" videos, login-user-only videos, "shadow" geo-blocked videos, and one testcase each for reference.
Add login hint for empty CC subtitle since the site appears to now hide subtitles from guest visitors.

Add geo-free, premium-free testcases for Bangumi extractors. Fix metainfo extraction glitches in Bangumi extractors.

Add BilibiliCheeseIE and BilibiliCheeseSeasonIE to support course videos.

Add detection of 301 redirects for BiliBiliIE. Fixes #8428

Template

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Copilot Summary

🤖 Generated by Copilot at ae38877

Summary

✨💰🇨🇳

Added support for Bilibili Cheese, a paid subscription service on Bilibili. Imported BilibiliCheeseIE and BilibiliCheeseSeasonIE from bilibili.py to _extractors.py.

Walkthrough

• Add support for downloading videos from Bilibili Cheese, a paid subscription service on Bilibili (link, F0L241

[bashonly]

Sorry it took me so long to get around to reviewing this!

I have some questions about _get_divisions() that could probably be answered if you provide an example API response

[c-basalt]

Adding fix for #8428 here so the testcase can take advantages of patches on BiliBiliBangumiIE.

[xiamubobby]

Any plan on releasing this soon? The latest build upon 2023.11.16 looks still yet coming with the Cheese categorization support.

[bashonly]

yt-dlp --update-to nightly or python -m pip install -U --pre yt-dlp