Adds the following resources:
- CapsuleMesh: a capsule object
- CubeMesh: a cube that can be subdivided
- CylinderMesh: a cylinder
- PlaneMesh: a horizontal plane that can be subdivided
- PrismMesh: a prism shape
- SphereMesh: a sphere
- QuadMesh: reintroduction of the original quadmesh
Removes the old Quad and TestCube nodes
