Someone developed a program before, but it vanished and went into obscurity due to copyright infringement.
It's really simple to do a Geeked Rig, all you need is an imaging software ala. paint, photoshop. Get existing Geeked rigs and copy and paste. Problem is not every single pedal/guitar/equipment is listed on existing geeked rigs. I had loads of trouble finding a robotalk, murf, etc.
In any case, I suggest you proceed with caution, quite a number of people offering to geek other people's rigs have got in trouble with the original creators.