Move patch server messages to config file

[patapancakes]

I'm running a newserv instance and whenever I want to edit the patch server message I have to recompile the server, it would be very helpful if the message was instead editable from the config file.

[fuzziqersoftware]

I implemented this just now in commit 293cc86. See the added sections in config.example.json for how to use it.

[patapancakes]

Thank you!