tdl: create demi-doom/doom-lite files

[KayosMaker]

There may be many people who see the sense of top mounted dc, but dont want to bother with the panels or extrusions. we could do a small set of files for them, to create a sort of doom lite. the biggest modeling job would be a set of lower corners to sit in place of the z drives. i already modeled a version of the swing out lcd mount that works in a top skirt. someone could just print new lower corners, a second set of skirts, and be darn near off to the races on a demi-doom conversion. such would be easy to wrap in full doomcube armor, if the person ever desired. it would be a pretty easy upgrade.