Add the ability to reset the field frame estimator

[sswadkar]

We want odoTField to include the starting auto position and also account for any error in robot placement seen by vision. Should add a resetFieldFrameEstimator() when the selected auto changes, rather than at the beginning of the auto mode. That way the estimator has enough time to converge to the actual transform (rather than the provided one) before the match starts so small misalignments will be corrected for immediately.