Multiline Broadcasts

[FredyJabe]

Gives the ability to server owners to send multi-line broadcasts, could be used as a future MOTD system or automated messages of some kind.

I know for sure that I would use this system to send automated messages every hours to remind players to take a couple minutes breaks :)

Edit: Also moved the ParseMessage method to the ChatManagerHelper instead of the ChatManager itself since I'm using it in the CommandManager too, instead of copy-pasting code.