Print Sequence: Print by Material

[trankillity]

The Print by Object print sequence can be pretty handy, but the extra padding needed around each of the items does reduce the number of components you can print on a single bed.

What I'm proposing is a "Print by Material" mode that would allow Orca to keep objects of the same material together when auto-arranging, and allow for multiple materials on the same plate without needing a full purge tower/material change on each layer.

I realise this can effectively be achieved already by importing all models as sub objects, however this prevents the auto arrange function from working.