Add support for Random Map Survival

[MatthewManley]

This is probably a major overhaul of how the server controller works. I would not attempt to implement this unless you consult @MatthewManley first on how the current architecture is set up.

Currently when starting RMC, any player can hit the start button which looks like this:

There are a couple of possible variations we could do here:

• Create a completely separate controller for RMS. We would have two servers, one for RMC, and one for RMS.
• Add an additional button
  • Voting system to start a particular gamemode?
  • Environment variables for enabling/disabling gamemodes

I am leaning towards the second with the intention of not fragmenting our users in the server while playing