Cogs DnD dice fixed and supported

Fixed the original dice as well as I was able to. Also supported them in chitubox which printed fine for me.

I recommend watching Rev Chumley's video on how to print dice and remove the supports easily. https://www.youtube.com/watch?v=AXX-zpRYDS0&t=0s

Didn't do the d100 coz I don't use it and it took quite a while to fix the other. Might do it later.

All the credit goes to the original creator yolwoocle