Inspired by @kiil, this PR adds another game for exploration &
inspiration - this time, based on the seminal incremental idle game
[Universal
Paperclips](https://www.decisionproblem.com/paperclips/index2.html).
This game implements a screen drawing loop with a roughly 60FPS
framerate, asynchronous user interaction via the new `job send` and `job
recv` commands, rudimentary deltatime calculations, and the ability to
save and load state memory.
The game does not feature any of the special mechanics that emerge from
the original, though a future project may emerge to make a more 1:1
replica of the original.
I have also updated the .gitignore to make sure no one accidentally
pushes their game save to the repo after trying it out. 😃
