Examine source code of RoAvatar - Roblox Avatar Editor Improved

{
  "manifest_version": 3,
  "name": "RoAvatar - Roblox Avatar Editor Improved",
  "description": "A remake of the Roblox avatar editor with new and improved features",
  "version": "1.0.1",
  "icons": {
    "16": "assets/icons/16x16.png",
    "32": "assets/icons/32x32.png",
    "64": "assets/icons/64x64.png",
    "128": "assets/icons/128x128.png"
  },
  "content_scripts": [
    {
      "js": [
        "inject.js"
      ],
      "matches": [
        "https://*.roblox.com/my/avatar-plus*",
        "https://*.roblox.com/*/my/avatar-plus*"
      ],
      "run_at": "document_start"
    },
    {
      "js": [
        "editor-inject.js"
      ],
      "matches": [
        "https://*.roblox.com/my/avatar*",
        "https://*.roblox.com/*/my/avatar*"
      ],
      "run_at": "document_start"
    },
    {
      "js": [
        "inject.js"
      ],
      "matches": [
        "https://*.roblox.com/roavatar*",
        "https://*.roblox.com/*/roavatar*"
      ],
      "run_at": "document_start"
    }
  ],
  "web_accessible_resources": [
    {
      "matches": [
        "https://*.roblox.com/*"
      ],
      "resources": [
        "/*"
      ]
    }
  ],
  "permissions": [
    "storage"
  ],
  "host_permissions": [
    "https://*.roblox.com/*",
    "https://*.rbxcdn.com/*"
  ],
  "background": {
    "scripts": [
      "background-script.js"
    ],
    "service_worker": "service-worker.js"
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "roavatar@stein.com",
      "data_collection_permissions": {
        "required": [
          "none"
        ]
      }
    }
  },
  "action": {}
}