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.
@aymanhab @aseth1 Peeking around this region of Model's implementation, I see several TO_DO comments laying around.  I'll refrain from purging commented code until Ayman is sure it's not useful anymore, for example in a focused cleanup effort on Model.