Design in-game menu icon and layout

[ZenPylon]

Summary

We'll want to allow players to perform actions outside of game play, such as

• Saving game
• Restart level (without having to die)
• Turn off music
• Turn off sound effects
• Other settings?

The restart level would be useful in a case like below, where I blocked myself out of a certain path by pushing a crate in the way that I couldn't reverse (I can't climb down that vine):

[ZenPylon]

@djdecker23 You wanna think about what that might look like from a design/visual perspective?

[ZenPylon]

Ah, looks like you can get to this menu by hitting "escape". Let's keep this issue open in case we want a visual button to press in addition/alternatively.