Support for 100% text-based MUD

[DennisRas]

I'm sure it'd be easy to implement.
Make the server text-based by default and only use text as input/output.
Clients can then send a message to opt-in for additional/exchanging payloads of data.

Conversation copied from Discord:

[2:13 PM] Liquidor: Thought about making the game CLI friendly? Or did the other MUDs not do that? Most MUDs I've found have interfaces so not sure if people play MUDs 100% text-based
[2:18 PM] SirMrE | Simply: I think it should be CLI friendly at some point, it would be neat and allow people to develop more ways to play the game. This would also make it easier for visually imparred to play the game for sure!
[2:18 PM] Apolloeye: a text-based MUD you say... 😄
[2:18 PM] SirMrE | Simply: lol
[2:18 PM] Apolloeye: text-based MUDs are still very popular with blind people in the CL or with a mud client.
[2:19 PM] SirMrE | Simply: Yea, I think it would make sense to make it possible to do that.
[2:19 PM] SirMrE | Simply: @liquidor could be the first thing to do, once 0.1 hits
[2:19 PM] Apolloeye: For referece, here is a forum specifcially for blind people and they are all mostly MUDs: http://forum.audiogames.net/viewforum.php?id=25
[2:30 PM] Liquidor: I'm sure it'd be easy to implement. Make the server text-based by default and only accept text as input/output and then have clients send a message to opt-in for additional payloads/protocols(edited)
[3:18 PM] SirMrE | Simply: Yea probably 😛 Just need to make sure every action you can make can be done via a command!
[3:19 PM] Liquidor: @SirMRE | Simply Yup. Also helps testing when everything has a command protocol.
[3:19 PM] SirMrE | Simply: Very true, didn't think of that. Should make CI easier