CHAT MSG ADDON

Fired when the client receives a message from CHAT_MSG_ADDON: prefix, text, channel, sender, target, zoneChannelID, localID, name, instanceID

Payload
;1. prefix : string - The registered prefix as used in
 * 2. text : string - The message body
 * 3. channel : string - The addon channel's chat type, e.g. "PARTY"
 * 4. sender : string - Player who initiated the message
 * 5. target : string - The channel index and name, e.g. ; or for the "WHISPER" chat type, same as
 * 6. zoneChannelID : number - Seems to be always 0
 * 7. localID : number - The channel index or 0 if not applicable.
 * 8. name : string - The channel name or an empty string if not applicable.
 * 9. instanceID : number - Seems to be always 0