removing some white space
Adding sensor arduino to the prosthesis OS state machine. It works!
Changes made to support heart beat signals from Arduinos

Added public API for enabling and disabling a heartbeat signal from the
Arduinos. The heartbeat period and number of allowable missed deadlines
are configurable through this API.

We should now be able to reliably detect when an Arduino is disconnected
(USB disconnect) or becomes unresponsive.

Added hooks to the disconnect event from within the ProsthesisOS state
machine. Added the sensor arduino to prosthesis OS.

Added a prosthesis logger to our unit tests so we can capture verbose
information about our unit tests when needed. Added a slew of additional
unit tests to detect different disconnection scenarios.
Added CSV file output for prosthesis arduino tests

This will let us gather telemetry data for motor controller tuning and
testing.

Also ensured that telemetry is toggle off when closing an arduino
connection. Added PID tunings to motor telemetry.