Child classes needed for ComponentDefinition/ModuleDefinition to/from Component Classes

[cjmyers]

Toplevel parts are done, but child classes are needed to be converted:

SBOL2 (CD) -> SBOL3 (Comp)

• Components
• MapsTos
• SequenceAnnotations
• Locations
• SequenceConstraints

SBOL2 (MD) -> SBOL3 (Comp)

• Modules
• FunctionalComponents
• Interactions
• Participations

SBOL3 (Comp) -> SBOL2 (CD/MD)

• SubComponents
• ComponentReferences
• LocalSubComponents
• ExternallyDefineds
• SequenceFeatures
• Ranges
• Cuts
• EntireSequence
• Constraints
• Interactions
• Participations
• Interfaces