0033206: Data Exchange, Step - Supplemental geometry support

0033206: Data Exchange, Step - Supplemental geometry support

Updated import methods to add supplemental geometry as a reference to the PMI
Updated export methods to handle supplemental geometry as a special type.
Created new GUID for supplemental geometry container - compound contains all sup. geom. shapes.
Created new GUID for supplemental geometry label - supplemental geometry shape.
Created new GUID for supplemental geometry reference - relation for depends on.
Supplemental geometry: surfaces and curves.