Twitch removing some chat commands

[ryanwinchester]

https://discuss.dev.twitch.tv/t/deprecation-of-chat-commands-through-irc/40486

The following Twitch Chat Commands 80 are affected by this change and have a migration path to the Twitch API: /announce, /ban, /unban, /clear, /color, /commercial, /delete, /emoteonly, /emoteonlyoff, /followers, /followersoff, /marker, /mod, /mods, /unmod, /raid, /unraid, /slow, /slowoff, /subscribers, /subscribersoff, /timeout, /untimeout, /uniquechat, /uniquechatoff, /vip, /vips, /unvip, /w