GET beta/fleet/drivers/efficiency: Added high torque and over speed fields.

The GET beta/fleet/drivers/efficiency endpoint has some new features! Added two additional fields for highTorqueMs and overSpeedMs. High torque is time the vehicle engine torque is greater than 90% in milliseconds. Over speed is driving time spent over the efficient speed threshold in milliseconds. In addition, fields now default to 0 instead of hidden.