Add a client/clientupdate event for servernotifyregister

[unable to retrieve full-text content]

Hello, Well most of the request is in the title :) We've got server and channel event, but not client events. Which means a query client can't know when a client has switched to afk or changed their nickname, or anything like that (without having a loop to query those which defeats the entire... Add a client/clientupdate event for servernotifyregister