add config files for elmos, scanners and how-to for new scanner firmware

So far, I added all config files that I have and that can be assigned to a specific robot.

There are still some things missing (configs of the old robots, scanner fields for the new raw3-3, etc.) but those should be included as soon as they are set.

Please note that the elmo configs work ONLY for the respective hardware and motor out of the box. If anything is changed there (even only the wiring), the commutation has to be adjusted to avoid malfunction