Add run after build
Merge branch 'feature/add-test-after-build' into 'master'

'Re'-add the run test after build cmake option

+1: Julien Lenoir, gsathyaseelan, haizhouW

Merged-on: https://www.assembla.com/code/OpenSurgSim/git/merge_requests/836313
Serialize RigidRepresentation

1. Add 'SURGSIM_CLASSNAME' to it.

2. Register it in the object factory.

3. Clean up header files.

4. Adjust order of member data.

5. Add UnitTest for serialization.
Merge remote-tracking branch 'origin/master' into wip/Physics-Serialization
Adjust initialization order in RigidRepresentation's constructor.
Serialize FixedRepresentation

1. Register FixedRepresentation in ObjectFactory

2. Add 'SURGSIM_CLASSNAME'.

3. Add UnitTest for serialization.