Carpet Sky Additions – Create compat

Changes:

• When player kills _drowned_, they have a chance to drop _dried kelp_ and _zinc ingot_.
• When player kills _zombies_, they have a chance to drop _andesite alloy_.
• When _fishing_ there is a slim chance to get _andesite alloy_.

No vanilla drops were deleted or replaced.

If you are wondering why I think just these are enough:
I think that given default create mod recipes, there is no need to add more drops. Everything is accessible even with this limited amount of changes. Although, I might do something for automated zinc production later.

Edit: Put on hold. Not sure when I will come back to this project