Support API Token to authenticate with qBit (instead of username/PW) in qbit 5.2.X

[ManiMatter]

qbittorrent has introduced API keys in 5.2.x to autehticate.
We should encourage using that instead of username / password authentication.

Reference: qbittorrent/qBittorrent#23212

[ektorasdj]

Does Delcutarr work for you in version of qbittorrent 5.2.0? Mine doesn't connect and fails

[ManiMatter]

Test dev version and pls report back if this works for you. Was released today