Mass unban feature

[cineafx]

https://dev.twitch.tv/docs/api/reference#get-banned-users

Will require multiple confirmation steps! Something like:

user: <unbanall
icecreamdatabase: if you are sure type "<unbanall XXXXXXXXXX"
user: <unbanall XXXXXXXXXX

Where XXXXXXXXXX is a randomly generated nonce.

First fetch all users, generate a list and then use additional connections to send that list out.