Prusa MK4 bin for MMU3

This is a remix of Prusa MK4 bin - modified with accessory cover and two clips von pjvenda The bin has a cut-out for the filament buffer printer holder of the mmu3 There are four versions Two short ones in the case there is for example an camera mount attached to the printer and two long ones using the whole space. When placing the bin it is easier to move the filament buffer printer holder a little bit to the front. Place the bin and move both bin and holder back to their original position.