feature: anti-leech

[LawssssCat]

discussion:

• 19-02 qBittorrent https://github.com/qbittorrent/qBittorrent/issues/10258
• 19-12 https://github.com/arvidn/libtorrent/issues/4192
• 20-01 https://github.com/arvidn/libtorrent/issues/4217

solution:

• "super seeding mode"
• iptables/nftables rules
• script calls webapi

[LawssssCat]

alternate:

• [x] shell - https://github.com/Jorman/Scripts#addqbittorrenttrackerssh
• [ ] c - https://github.com/c0re100/qBittorrent-Enhanced-Edition
• [ ] c - https://github.com/jinliming2/qbittorrent-ban-xunlei
• [ ] c++ - https://github.com/jinliming2/qbittorrent-ban-xunlei
• [ ] go - https://github.com/Simple-Tracker/qBittorrent-ClientBlocker
• [ ] python - https://github.com/SeaHOH/ban-peers
• [ ] python - https://github.com/originqtum/banned-xunlei-for-qbittorrent
• [ ] javascript - https://github.com/yukinotech/qBittorrent-block-xunlei

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