Matt ayman frames

Redo of the merge of Frame, RigidFrame, FixedFrame, Station and Marker ModelComponents along with code to convert Marker to new format for serialization/deserialization and inclusion of FrameSet in model.
@sherm1 @msdemers @aseth1 or @chrisdembia Please review and let us know your feedback.
>Getting a handle to the "AnchorBody" or "MobilizedBody" is part of RigidFrame's interface. I think this needs to be acknowledged in it's description.
I question the reasoning to provide AnchorBody in RigidFrame. FixedFrame should provide its anchor RigidFrame not Body.