IMoO/resource_pack/textures/terrain_texture.json

{
  "resource_pack_name": "AddonMaker[Resource]",
  "texture_name": "atlas.terrain",
  "padding": 8,
  "num_mip_levels": 4,
  "texture_data": {
    "imoo_chair": {
      "textures": [
        "textures/items/block/imoo_chair"
      ]
    }
  }
}