npcmodels/ - one sub-folder per model, each holding its geo model + animation (+ textures).
The <folder name> is the model id shown in the /sdu NPC editor (id = <pack namespace>:<folder>).

WORKED EXAMPLE (complete + working): example_warrior/
    model.json                          catalog: names the geo/texture/animation + anim map
    example_warrior.geo.json            the GeckoLib mesh
    textures/example_warrior.png        its skin
    animations/example_warrior.animation.json
  Copy the folder, rename it, replace the three files, and update model.json - done.
  Paths inside model.json are RELATIVE to the model's own folder.

NOTE: these are for OUR NPC entities only. A race/form "Custom Model" is a DMZ feature and must
live under the dragonminez namespace instead - see assets/dragonminez/geo/entity/races/_README.txt.
