[Feature] Create home screen ui

[Aebel-Shajan]

Currently the game has no homepage with ui.

I don't really have a clear idea of how to do this, but I have some general points:

• It would be good if we could seperate the game loop into another file gameLoop.ts.
• Use react for the ui.
• Create HomePage.tsx to contain ui components. There should be a play, options and github source button present.
• Add state management to the entry file main.ts such that it initially directs to homepage then to gameplay once the play button is pressed.