Changes:

- updates to the NMS (navigation messaging system) https://synthiam.com/Support/ARC-Overview/robot-navigation-messaging-system

- ultrasonic distance sensor has degrees and option to push value into the Navigation Messaging System

- ultrasonic distance has a variable for storing the value

- read digital has a variable for storing the value

- read ADC stores value in variable

- adc meter stores value in variable

- adc graph stores value in variable

- Number of fixes for some old skills that used a legacy timer. Updated to latest threading model

- camera fix for an error being displayed sometimes when ARC is shutting down

- ultrasonic ping has additional information added to the navigation messaging system