Waterbeds

Introduces a new bed that can be waterlogged to allow for more immersive underwater sleeping. I mostly made this so if someone wanted an underwater only base, they could still sleep

Credits:

Made by: Sir_BananaCat
Help from: Squibs (AKA TheSquiddyLink)
Referenced code from: pnku's More Bed Variants
Bed item model referenced from: Motschen's Better Beds