Package Registration, Transfer of previous Caesar.jl Code

This is the pre-release of a new package to capture all robotics and SLAM related visualizations used by the Caesar.jl, RoME.jl, and IncrementalInference.jl repositories. Current development in the ecosystem is transitioning to WebGL based technologies, although this pre-release includes support for DrakeVisualizer.jl / MIT Director which is a local VTK based solution. Previous 3D viewers also include CollectionsViewer.