@minecraft/creator-tools/res/samples/microsoft/samples/custom_projectiles/resource_pack/index.json

Minecraft Creator Tools command line and libraries.

{
  "files": [
    "manifest.json",
    "pack_icon.png"
  ],
  "folders": [
    "animation_controllers",
    "animations",
    "attachables",
    "entity",
    "models",
    "render_controllers",
    "textures"
  ]
}