[New Feature]: Controller / direction input 🎮

[mark-chit]

What are you requesting?

Add way to direct snake with keyboard input

What platforms will work be required for?

No response

[JavaRip]

See snapshot below for how to capture keyboard inputs in javascript: https://jsbin.com/yagopibaye/1/edit?js,console,output

Further reading
addEventListener: https://developer.mozilla.org/en-US/docs/Web/API/EventTarget/addEventListener
switch statement: https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Statements/switch

[lewisclark]

Implemented in #36