Refactor game states

[Nigh7Sh4de]

At the moment things are just expected to know about other things and what they are supposed to do in certain events.

For example: clicking the Game Over text, the gameOver object needs to know to reset some stuff
(This is without even mentioning the currently atrocious code controlling the store/pausing mechanic)

Sugessted Fixes

1. Create game states
2. Do something more interesting 😃

[Nigh7Sh4de]

On App Launch:

• spawn init
• infoButt init
• highScore init
• gameOver init

[Nigh7Sh4de]

On start game (from death or app launch):

• tank init
• storeButt init
• spawn reset
• score init
• infoButt kill
• health init
• gameOver kill
• activeBulet init

[Nigh7Sh4de]

on pause:

• tank hide
  • look disable
  • shoot disable
• store init
• spawn freeze
• activeBulett kill