message: add jog functionality
diff: @@ -159,6 +159,17 @@ def move_instrument_for_probing_prep(instrument, robot):
  +def jog(instrument, distance, axis, robot):
  + '''move position relative to current instrument position'''
  + pose_tracker = robot.pose_tracker
  + position = \
  + dict(zip('xyz', pose_tracker[instrument].position))
  + print("pos1", position)
  + position[axis] += distance
  + print("pos2", position)
  + instrument._move(**position)
  +
  +
  