LED Matrix startup animations

[JohnAZoidberg]

Animations

• [x] Startup Percentage (like the old pattern)
• [x] Moving Zigzag pattern
  • [x] PoC
  • [ ] Fix the one pixel that's off (might need to allow off screen painting...
• [x] Game of Life
  • [x] Blinker, Toad, and Beacon are pretty annoying/boring. Combine them to a single animation
• [x] Breathing animation
  • [x] PoC
  • [ ] Make sure it breathes in and out, not just in
• [x] Pong game
  • [x] PoC
  • [x] Make the paddles move a bit more
• [x] Snake Game
  • [x] PoC
  • [x] Fix crash when it reaches the edge
  • [x] Make it play a bit more and consuming food
• [ ] Scrolling text

TODO

• [ ] Is there a cancellable Iterator? Can't find it, otherwise I can call .count() to consume everything
• [x] Each one might have a different frame-rate
• [x] But make sure they're each displayed for a reasonable amount of time
• [ ] Make a trait for the animations to unify the API
• [x] Randomly show one of the patterns on startup
• [x] Define what happens when the animation is done => currently clears screen