[TODO] Main Menu: Add Join Lobby Button

[Bratah123]

Abstract

This adds a button to the main menu that lets you input a lobby ID that will connect you with a certain lobby.

Details

This button should pop up some type of input box that lets you put in a lobby id.
Given the ID, attempt to join the lobby.

Tasks

• Button on Main Menu
• Input Pop up
• Do connection

[KOOKIIEStudios]

Probably have to come up with a better way to identify lobbies for players, since the lobbies' UUIDs are long strings at the moment