Fix thrusters spinning randomly when stopped

[antoinepetty]

I think it's a problem with the timing of the Servo library on the Nano 33. Using its native mbed pwm control may solve the problem

example: https://forum.arduino.cc/t/interrupt-latency-problems/656255/4

This would need to be done in the outputs/esc class

[antoinepetty]

Code for reference:

Example using the normal Servo library (current implementation) https://github.com/ncl-ROVers/arduino/blob/master/arduino-main/src/equipment/output/genericEscMotor.cpp
(Those constants at the top are dead code and should be removed oops)

Example using the separate servo control board https://github.com/ncl-ROVers/arduino-2019-20/blob/master/arduino-main/src/equipment/output/genericEscMotor.cpp

[antoinepetty]

related pull request:
#30

[antoinepetty]

Best solution would be to get the Adafruit Servo Driver as proposed for 2020