MF (Minifinity) Profile Keycaps

These are generated using the excellent [gridfinity-rebuilt-openscad](https://github.com/kennetek/gridfinity-rebuilt-openscad/) by kennetek. - MF: Gridfinity bin at 42% scale, the same size as Machenna56k's Minifinity. Print these flat with the stem facing up (reduce stem tolerance) with normal(auto) Snug support or rotated standing up at 45°/90° (increase stem tolerance).