[Feature] Support qBittorrent compatible API

[hongkongkiwi]

It would be great if the API can be compatible with the qBittorrent API. This would allow us to hook up anything which supports it such as Sonarr/Radarr.

This allows us to have automatic handling of adding torrents from these systems without users required to add/remove torrents.

Another option is to add the TorrServer API into these projects, but I think it might make more sense to support an existing standard as there are many such Arr projects which use QBT protocol.