- move speedsensor files from motorctl pcb to common
- single pcb create and configure global speedsensor objects
- display: create fast slow veryslow loop
- clear display every 30s
- show speed in rpm and km/h
NOTE: speedsensor needs fix, direction unreliable
slightly rework hacked display test
- new code structure
- split code in several functions
- add task for display instead of running it in main()
- functions to convert voltage to battery percent charged
- show percentage and voltage on display