Examine source code of Cookie Manager Pro

{
  "manifest_version": 2,
  "name": "Cookie Manager Pro",
  "version": "1.10.2",
  "description": "Cookies : créer, éditer, importer/exporter, stockage, DevTools.",
  "homepage_url": "https://t.me/werlist99",
  "permissions": [
    "cookies",
    "storage",
    "tabs",
    "browsingData",
    "clipboardWrite",
    "privacy",
    "<all_urls>"
  ],
  "options_ui": {
    "page": "options.html",
    "open_in_tab": true,
    "browser_style": false
  },
  "background": {
    "scripts": [
      "background.js"
    ]
  },
  "devtools_page": "devtools/devtools.html",
  "commands": {
    "_execute_browser_action": {
      "suggested_key": {
        "default": "Ctrl+Shift+Y",
        "mac": "Command+Shift+Y"
      },
      "description": "Ouvrir Cookie Manager Pro"
    }
  },
  "browser_action": {
    "default_popup": "popup.html",
    "default_title": "Cookie Manager Pro",
    "default_icon": {
      "16": "icons/icon16.svg",
      "32": "icons/icon48.svg",
      "48": "icons/icon48.svg",
      "128": "icons/icon128.svg"
    }
  },
  "icons": {
    "16": "icons/icon16.svg",
    "32": "icons/icon48.svg",
    "48": "icons/icon48.svg",
    "128": "icons/icon128.svg"
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "@werlist99-cookie-manager",
      "data_collection_permissions": {
        "required": [
          "none"
        ]
      }
    }
  },
  "developer": {
    "name": "werlist99",
    "url": "https://t.me/werlist99"
  }
}