Make SubdividedQuad
Adds a node that create a 'SubdividedQuad' from its members

Quad Vertex 0
Subdivided Quad Vertex Structure

The vertices for the four corners of this quad 

Quad Vertex 1
Subdivided Quad Vertex Structure

Quad Vertex 1 

Quad Vertex 2
Subdivided Quad Vertex Structure

Quad Vertex 2 

Quad Vertex 3
Subdivided Quad Vertex Structure

Quad Vertex 3 

Subdivided Quad
Subdivided Quad Structure
