Reorged for easier assembly and more assets

I went overboard reworking these to have better colors and be easier to assemble. I've added a couple more items (namely waste bins and waffle irons) as well as some more variations for floor/wallpaper. I did rework them to be more clear how the pieces fit together, and swapped up the sinks/cabinets/drawers to be overlays on the base standing cabinet boxes, and tweaked sizing to better match my particular 32x32 character sprites.

Overall, I think I made these much better assets, with improved versatility, but the new versions do require a little bit more effort to assemble in a scene, probably.

Chances are next steps will include some furniture, dishware and kitchen supplies, and maybe a couple animations like running water, waffle iron open-close transition, stove heat, and fridge open/close. When I get to them is entirely up in the air though, as I seem to mostly work on these when I'm avoiding major milestones for my PhD