Add import of configurations for stepper motor
Introduce wrapper function for stepper setup
Add function to handle device attachment event

Only accept correct device identify by serial number in configuration
Add corresponding device detach event handler func
Add position change event handler function

Update current position variable __active_position
Add getter function for current stepper position
Add event handler function registration prior open
Add device open after callback registrations

Open device by serial number in configuration
Add binding variable to device open status