While testing the ADJUST_CHAIR mode on actual hardware fixed the
following issues:
- main.cpp: Uninitialized pointer for leg/back-rest were passed to
control task thus as when a method was called the controller crashed
- chairAdjust.cpp: the state was never reset to REST_OFF when below
stick threshold
- complete rework of chairAdjust.cpp/.hpp
created a class cControlledRest which is more readable
and saves a lot of duplicate code
- joystick.cpp: move chair control via joystick to
chairAdjust.cpp (prevents dependency loop)
- button.cpp: fix bug instant idle when changing to ADJUST_CHAIR
Note: briefly tested this state on a breakout board:
Mode change and call of new class methods works.
