Rewrite tinygrad in rust

[mitiko]

Why?

• learn how tinygrad works
• learn about GPUs
• get roasted by George Hotz
• get a feel of the differences from writing in strictly typed languages and interpreted python

https://github.com/geohot/tinygrad is under 5KLoC, for the rust rewrite, I should strive for under 10KLoC?
There's a lot of single-line pyhton list/dict comprehensions that convert to multi-line rust iterators..