`Mesh.from_polyhedron(polyhedron)` should be renamed `from_platonicsolid`

## Expected Result

I expect `Mesh.from_polyhedron` to consume a Polyhedron class. Turns out it doesn't. This causes a slight semantic nuisance.

## Actual Result

Currently, the function takes an integer and constructs a platonic solid and turns that to mesh.

I think the current thing should be renamed `Mesh.from_platonicsolid(f)` and the function `Mesh.from_polyhedron` should follow the same implementation of `from_shape`. Note that I'm using Platonic solid