Unlink forward / backward time and turning time in L298N handler

[espresso0000]

I have been hand adding to the motor controller to allow improved control over the tank drive using a way to set the turn different then forward & reverse to allow for:

l298n_sleeptime=0.2
l298n_rotatetimes=2

• l298n_lr_sleeptime=0.1
• l298n_lr_rotatetimes=2

then adding:

if direction == 'L':
GPIO.output(StepPinLeft, GPIO.HIGH)

• time.sleep(l298n_lr_sleeptime)

  GPIO.output(StepPinLeft, GPIO.LOW)

if direction == 'R':
GPIO.output(StepPinRight, GPIO.HIGH

• time.sleep(l298n_lr_sleeptime

  GPIO.output(StepPinRight, GPIO.LOW)

[Nocturnal42]

As talked about in your pull request. We will probably unlink forward / backward and turning. Just need to do a little consulting before hand. Docs and sample config will need to be updated with warnings about the change so people transitioning from the old controller will not be caught off guard.