Parse .mcmeta JSON files for animated textures

[deathcap]

Started working on an .mcmeta parser: https://github.com/deathcap/mcmeta - reads animation frame coordinates given the JSON and texture file width/height

Next up: split up texture strip into separate textures for each frame, pass to voxel-texture-shader for animation

[deathcap]

Using first frame only for now: https://github.com/deathcap/artpacks/commit/6973b5d1f0448addc2647ae8b9b61e27572bb8d8 https://github.com/deathcap/artpacks/issues/6

[deathcap]

https://github.com/deathcap/mcmeta can now accept (pixels, json) and return [{image:.., time:...}] for each frame, now to integrate with this module