meatcube improvements, metalcube

[misto]

meatcubes, including krampus, should make squelching slimy blob sounds as they move and at intervals.

meatcubes should squirt out blood periodically and smear it around as they move

borgs should be cubeable and become metalcubes, which make metal scraping/creaking/banging sounds as they move and at intervals, and squirt out oil periodically and smear it around as they move