MediumLinearMotor device should inherit `gotoAngle` and `resetZero` methods

[codeKonami]

First of all, thanks for this great library, incredible work.

I've been using it with the Lego Boost : https://www.lego.com/fr-fr/product/boost-creative-toolbox-17101

The motors are found as MediumLinearMotor but after some research should be able to use the resetZero and gotoAngle methods. I'm wondering why we can't find them in this file : https://github.com/nathankellenicki/node-poweredup/blob/master/src/devices/mediumlinearmotor.ts

Thanks