Add Linux and/or ARM compatibility

[philiparola]

If we want to display KHR1 at the entry of the lab, we want to not have to use a whole Windows PC if we don't have to. An RPi running Windows needs ARM cross-compilation, or a Linux box will suffice.

[geoolson]

The code is using the official Microsoft sdk and is only for windows. We could port the code to linux and use the intel camera. That has an sdk that works in linux.