Add timers for state `b1_realized_object`
This introduce the new state `b1_realized_object_seg1_ok`, this state is entered
when the `EVENT_SEG1_HAS_TO_EXPIRE` event is triggered. `b1_realized_object_seg1_ok::dispatched_event_sensor_height()`
now handles the good case. `b1_realized_object::dispatched_event_sensor_height()` handles the token is too early,
`b1_realized_object_seg1_ok::dispatched_event_seg1_too_late()` handles the token is too late.