Sets up various things after we have successfully
logged onto the server.
Has to be done at MOTD, as we only know whether we're on Twitch after
RPL_MYINFO or so.
Some of this could be done in initialise, like spawning the persistent
worker thread, but then it'd always be spawned even if the plugin is disabled
or if we end up on a non-Twitch server.
Sets up various things after we have successfully logged onto the server.
Has to be done at MOTD, as we only know whether we're on Twitch after RPL_MYINFO or so.
Some of this could be done in initialise, like spawning the persistent worker thread, but then it'd always be spawned even if the plugin is disabled or if we end up on a non-Twitch server.