Grant admin as host

[ForLoveOfCats]

The host should be able to grant admin to other players. These admin players would then be able to run console commands on the host.

[ForLoveOfCats]

While builtin mod support has been removed this is still relevant for allowing select players to perform administrative tasks when without physical access to the server machine

[ForLoveOfCats]

Still applicable, the new command "system" that has been around for a while now makes this much easier and safer. I need to abstract how commands print so that a command being run on the server can print to the console of the admin client which executed the command. Beyond tracking who is and isn't an admin this should be trivial (and will be required soon as the game is moving to a dedicated server only system internally so what used to be a listen server will actually open a server process in the background).