Add a common base class for both HolonomicPlatformVelocity controllers
and add a property with which to choose one.
Make the acceleration limits also configurable via properties.

The header is very expensive and is often used in cases where a simple for loop does the exact same thing..

This reduces the amount of headers that are necessary for different use cases

- add setWaypointAx to access the controller from python

- newTarget was not commited to write buffer

- newTarget was not commited to write buffer in
NJointHolonomicPlatformGlobalPositionController