Allow interactive changing of the rotational speed while a cycle is active

[futurexdesign]

Request is to allow the user to interactively change the speed of the basket while a cycle is running.

Intercept the encoder change (which we are already doing), and pass this as a speed change request to the motor controller. Not sure how this will behave with the wash cycle in particular, as it may cause an abrupt stop and reversal depending on where in the cycle it happens due to the way setVmax is implemented.