Create and flesh out YesOS documentation

[rajvinjamuri]

[ ] Github Wiki
[ ] Install readme?
[ ] Features, capabilities, and limitations
[ ] etc

[rajvinjamuri]

https://docs.google.com/document/d/11gI4PiCZUUlel34EmZhd9hpUakEQLlwV71CQcYHlOIA/edit?usp=sharing