Flügelschlag/Wingspan enhanced card boxes for sleeved cards and pins over magnets

Just a small remix of the card holders for sleeved cards to make them fit single cards on their back with sleeves as well as giving the cards a little bit more room. The original have been a very tight fit for my sleeves.

I also didn't want to use magnets, so I came up with some pins to put into the top slots of the boxes. Make sure to print only a few first to see if they fit. On my BambuLab P1S they came out nicely so they fit very tightly after pressing them in. Your mileage may vary though, in which case you can try playing around with scaling in your slicer. In total I think you need like 64 pins, less if you don't want to put some on the sides of the card holders.