set Position functionality

[bklebel]

Currently, there is only the Mode move to position implemented for the 'set Position' command.
The respective function needs to be 'inheritance injected'.

The Modes move to index and define and redefine present position are not yet implemented.
For them, more function logic is necessary, implementing redefining positions, as well as a more information whether 'setPosition' is working in a relative or absolute fashion