Add option to offset 3d field and odometry view start pose

[srimanachanta]

If you are visualizing odometry data but the starting pose is the field origin, the robot can quickly jump out of the field and out of view, it would be nice to have the option to offset the starting (and all other poses) by a transform. I know this wouldn't work after the pose was reset (say with vision), but then, such an option wouldn't need to be used by them.