Project to learn the vulkan API.

Checkpoints:
`42410890541d4cc67934ad383e49cfebab219d40`: first triangle rendering complete
`2ee55ac3adae04d8a773a16220dc8f657f093ed8`: drawing a square with index buffers
`ea5e4c9e6fcc910dab8d20cb43922387fe14944d`: rotating square with UBOs