[PR] Increase chances for clone defects & add new defects

[mralexs]

a couple people have mentioned it but some of the defects are so obnoxious or debilitating that at a point youd rather just cryo. personally id rather see prescanning removed, with some way to still save records to cloning disks. that way there would be some material cost, but not completely eliminate the possibility to be recovered when going on a dangerous mission, ie an azone or something where your body would be harder/impossible to get back. this could bring down the risk of an antag killing someone who went for their roundstart clone scan to pop out of the cloner and out them, while not making cloning itself a worse off experience

Maybe have scans degrade over time, so if you get scanned early you either get more defects or longer cloning time depending on how old your scan is