[Devel] Updated geolocation and navigation design document

Hi all,

Please find attached version 0.2.1 of the geolocation and navigation design document. This version incorporates feedback about swappable backends and the ability to back any of the APIs by an implementation in the automotive domain.

I have uploaded this version to the wiki as a draft. Further feedback is welcome and will be incorporated as normal.

https://wiki.apertis.org/File:Apertis-geolocation-navigation-design-0.2 .1.pdf

Thanks, Philip