Support Twitch's new tool for helping prevent ban evasion

[ALazyMeme]

I'm not sure how it'll be implemented, but chat ban evasion flagging is a new thing for webchat. I'd love to see something similar added to highlights in chatterino: https://safety.twitch.tv/s/safety-news/detail?post=Using-Machine-Learning-to-Curb-Ban-Evasion

[Felanbird]

low-trust-users.<user-id>.<channel-id> pubsub topic

[karl-police]

low-trust-users.<user-id>.<channel-id> pubsub topic

there are a few other pubsub topics as well, I think

[iProdigy]

This is now official, and can be used in c2: https://www.twitch.tv/videos/1604648673?t=00h20m45s

We can:

• log when a user's treatment status changes (e.g., monitored, restricted, none)
• read restricted messages that aren't sent over irc

Before the official docs are live, the fields can be seen here

[karl-police]

also someone talked about this https://dev.twitch.tv/docs/eventsub

[iProdigy]

Completed in #5056 to the current extent possible (no helix endpoints available for suspicious user management)