Add some additional tables. Table object and rack variants. Clean up some tile spritesheets.

[PetMudstone]

Purpose

• Adds fancy (carpeted) tables, alien tables, and bronze tables. Not yet constructable but able to be used by mappers.
• Turns racks and table objects (operation tables) into proper variants.
• Add wooden and alien variants of table frames. Identical in function to their parent for now. Craftable.
• Makes table frames able to be moved.
• Alien alloy can be used to make some stuff.
• Make some tile (wall and window) spritesheets more sanely organized.

Below: New tables in the table palette.

Changelogs

CL: Adds a few more kinds of tables. Bronze, alien, and fancy (carpeted) tables. Not yet constructable, sadly.
CL: Table frames can now be moved around. Added table frames made out of wood and alien alloy. New table frames are craftable.
CL: Alien alloy can be used to craft beds, lockers, floor tiles, table frames, and (useless) airlock frames if you somehow get it.

[Bod9001]

looks good