Given that most (all?) motor winders use electrical triggering it shouldn't be hard to build such a device.

I have a Jessops-branded winder to fit Pentax M bodies which has a built-in intervalometer with three settings. Only snag is that the shutter button needs to be held down to make it work. It didn't come with the remote trigger and I keep meaning to make one with two switches, a push to make for single shots and a latching switch for the intervalometer. Unless someone makes a double throw switch which has a momentary contact on one side of "off" and a latching one on the other.