Add the GPU split polygon

[madhephaestus]

@miho I Have here a PR that i know is unlikely to be merged, but represents a huge amount of work to bring this library up to date. I re-wrote the splitPolygon algorithm, as well as added a full-manifold mesh repair, both of which use Aparapi to run on the GPU. Other important changes were using newels method to compute the normal, instead of a dot product of 2 vectors, produces a valid normal on convex and edge case geometry. It also detects sets of colinear points, which can not be triangulated and therefor must be pruned. I also changed the CCW detection to use a reference normal and the computed normal of the points using newels method to more robustly detect CW vs CCW for concave polygons (Mosly important in SVG loading). I updated the text and svg loading to use a common Bezier extrapolation and also to use a common and triangulated monotone extrude (the rectangular method was breaking when doing spirals.)

Beyond those core algorithm corrections, i have added a ton of additional features. Many additional primitives, including parametric sweeps, threads spirals, bezier path exrsuions and 2 and 3d hexaganoal distribution methods. I have added Slicing, SVG loading and export, fixed the OBJ export, and implemented a "hole" classification where geometries are differences in union operations to simplify process flow.

All of these updates were in service of making CaDoodle CAD faster and more stable. CaDoodle is a cross-traainable open source alternative to TinkerCAD. Under the hood, JCSG powers the entire cad engine.