Cad component

The new file src/nodes/CADGeometry.js is an implementation of the nodes in the CADGeometry component.

test/functional/cadTeapot.xhtml is a test and demonstration of product structure nodes from CADGeometry:
CADLayer
CADAssembly
CADPart
CADFace

test/functional/indexedQuadSet.xhtml is a test and demonstration of the geometry node IndexedQuadSet, from the CADGeometry component

test/functional/quadSetwithColor.xhtml is a test and demonstration of the geometry node QuadSet from the CADGeometry component. For this rendering a periodic coloring is applied using the color field.