Setup game page

[valarao]

Overview

This PR resolves #68 and sets up the layout of the game page. This PR also fixes the styling of the footer, and ensures it is not visible at the game page.

To access the game page, click on any position card and click "Play".

Future TODOs

• Create chessboard component
• Link the title to the "current opening"
• Create backend endpoint to "create" a game
• Link position play to game page