PCX: Gridfinity Storage High Capacity Solution

This model follows the original model's design language but triples the capacity to 108 PCX chips on a 4x5 Gridfinity bin.It also removes the 2nd hole in the magnets (originally intended for a screw?) and lowers the tolerance to 6.2mm. On a BambuLabs X1C this allowed me to press-fit the magnets easily with no tools.