Ability to set the centerpoint and scale factor of the 3D View

[Marc Syp]

When creating a dynamic viz in the 3D view, it is easy to "lose the plot" by creating meshes outside of the extents, bad scaling factors, etc. Would love to be able to control the camera properties programmatically based on selection sets. A camera target and scaling factor would be a start, but ideally the camera position, target, and FOV would be exposed as well.