Multiplayer lobby

[marcusbirkeland]

Make a functioning multiplayer lobby. This does not need to be a working game, just a proof of concept of starting a game-session through firebase.

Acceptance citeria:

• Develop a way to distinguish users. For example generate a random username that is saved in firbease, and locally in localstorage.
• Add multiplayer button in main menu (if not allready implemented)
• On click, open a dialog showing two buttons: Host Game, or Connect to Game
• When hosting, a screen showing the logged in user's username and a random connect-code. Wire this up to firebase to enable making sessions with this code.
• Another player can input this code with Connect To Game, and should be placed in the lobby with the host.

[karenvi]

Bra jobba! Funker til meg i hvert fall 🎉