Reland "[pathkit] Reorganize to be more like CanvasKit"

This is a reland of e13873000023e3a914803896b591e9fb563b797c

I fixed the tryjobs to move the compiled files into the right
location.

Original change's description:
> [pathkit] Reorganize to be more like CanvasKit
>
> Change-Id: I64226b57161f86277e0635592c2c11442888335a
> Bug: skia:8216
> Reviewed-on: https://skia-review.googlesource.com/c/skia/+/502817
> Reviewed-by: Nathaniel Nifong <nifong@google.com>

Bug: skia:8216
Change-Id: I535f906b43816d3143e95ff9350ba20b998d817d
Reviewed-on: https://skia-review.googlesource.com/c/skia/+/503826
Reviewed-by: Nathaniel Nifong <nifong@google.com>
12 files changed