[Feature] Start Screen

[emzinnia]

What does starting Clickopolis look like?

The first component is that the user can choose their Leader (who comes with certain traits), set their leader name, civilization name, civilization color (or maybe flag?) and perhaps create an account (if that feature gets supported).

• Supports selecting a leader (WIP this)
• Said leader has traits listed (again, not implemented here)
• Allows the user to start the game
• Obviously, only shows up once
• Allows user to select their civ color