Examine source code of Plazh Ratings

{
  "manifest_version": 2,
  "name": "Plazh × Hotel Ratings",
  "version": "2.0.1",
  "description": "Shows Booking.com and Agoda guest ratings next to each hotel name on plazh.com package search results.",
  "icons": {
    "48": "icons/icon.svg",
    "96": "icons/icon.svg"
  },
  "permissions": [
    "storage",
    "webRequest",
    "webRequestBlocking",
    "https://www.booking.com/*",
    "https://www.agoda.com/*"
  ],
  "background": {
    "scripts": [
      "common.js",
      "background.js"
    ]
  },
  "content_scripts": [
    {
      "matches": [
        "https://plazh.com/*",
        "https://www.plazh.com/*"
      ],
      "js": [
        "common.js",
        "content.js"
      ],
      "css": [
        "content.css"
      ],
      "run_at": "document_idle"
    }
  ],
  "options_ui": {
    "page": "options.html",
    "open_in_tab": false
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "plazh-booking-ratings@kleid0.github.io",
      "strict_min_version": "102.0",
      "data_collection_permissions": {
        "required": [
          "none"
        ]
      }
    }
  }
}