Dark Sun in Fantasy Grounds



I’d like to move my Dark Sun (Pathfinder rules) campaign to Fantasy Grounds. So far, I haven’t found any useful custom content for Dark Sun on the FG marketplace and I’m thinking of doing some kind of extension on my own.
Would anyone in this Arena have any experience in such an endeavour, know of already existing work to base this on or maybe just some pointers where to start? I’d also be open to any sort of collaboration.