BezierCurve: Add Build method to create LineStrip
BezierCurve: Update class description
BezierCurve: Add curve data/metadata members
BezierCurve: Add Amalgamate/Separate methods

Warning! Amalgamated Bezier curves shouldn't be used to build LineStrips!
Higher number of control points = lots of subdividing to get the point
along the curve! If you absolutely must, use a fairly low subdivision
count.