[Help Needed] Help needed to set up a proper schema for selecting textures

[RhythmicSys]

This issue is regarding the 'rest-api' branch - which was my original idea on how to redo it but I don't think it will be how I do it.

Problems I'm having

• The previous setup of having all textures on one sprite sheet is not particularly maintainable, especially as I have added most variants of mobs and their decorations.
• Given that I do not use the sprite sheets myself and only use the individual textures I do not know what is a good way to set these up for someone else to interface with
• I have kept up with the textures on this branch but I don't have a way to interface with them, and I don't know how to set one up

I need help to set this up in a way that is useful for people to use, and is maintainable with more mobs and variants being constantly added. If anyone is able to help out or explain ways they use this or if it's better to have the textures combined for variants/decorations (fish, llama, etc) or if it should be available to be put together dynamically or what. I've been stuck on this for months