Wall Mount for Prusa Multiple Materials 2S Filament Buffer

# Wall mount
for the [Prusa Multiple Materials Unit 2/S](https://www.prusa3d.com/original-prusa-i3-multi-material-2-0/) filament buffer.

# History
The MMU 2.0 offering by Prusa is a promising new approach to multiple materials. With the release of MK3S they also [announced](https://www.prusaprinters.org/original-prusa-i3-mk3s-and-mmu2s-release-sl1-and-powder-coated-sheets-update/#2) an update to their MMU2S. They sent *all* of their MMU 2.0 owners a free update which included the Filament B