Examine source code of Idiom Master

{
  "manifest_version": 3,
  "name": "Idiom Master",
  "version": "1.0",
  "description": "An interactive quiz game to test and expand your knowledge of popular English idioms and expressions.",
  "icons": {
    "48": "idiom_master_icon.png"
  },
  "action": {
    "default_popup": "index.html",
    "default_title": "Idiom Master"
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "{fd77d945-9a39-47c0-8ff9-8ed3f4e36546}",
      "data_collection_permissions": {
        "required": [
          "none"
        ],
        "optional": []
      }
    }
  }
}