feature request: set torrent tag indicating that it comes from seanime

[EnergoStalin]

Checklist

• I checked that this feature has not been requested before
• I checked that this feature is not in the "Not planned" list
• This feature will benefit the majority of users

Problem Description / Use Case

Seanime added torrents hard to distinguish among others.

Proposed Solution

Automatically set "Seanime" and "Anime" tags when adding torrent.

So mixed tags would look like that.

Maybe it also worth specifying custom category(which seems to be unsupported in transmission or at least it's flood client) for better 2 layer filtering support in qbittorrent but it's not required to solve the problem so as you see fit.