Add a "start self hosted server" button

Somewhere in a world's menu, or main menu, there should be a button that turns that world into a self hosted server that people on the host's friend's list can join and play while the host isnt online playing. this would mean the server runs on the host's computer/device, and the host would have a management menu that allows them to start/stop the server, add plugins, mods, etc and change gamerules.