Macaw's Functional Furniture

That's some nice cabinets you got there, too bad the doors are glued shut.

(Macaw's Furniture on 1.12.2 never got funtional containers, so I added them.)

• Furnitures have containers (duh), with slot counts logical to the furniture piece.
• Furnitures spawn filler blocks and become more proper multiblocks, this is so you can right click anywhere on the furniture models.**
• Applied in a performant way with mixins.

Requires MixinBooter and of course Macaw's Furniture

**Fillers are first come first serve if you place two furniture pieces in the same block space, the new placement will lack fillers in the conflicted space.