Examine source code of Smart Tab Booker

{
  "manifest_version": 3,
  "name": "__MSG_extName__",
  "default_locale": "en",
  "version": "1.6.10",
  "description": "__MSG_extDesc__",
  "permissions": [
    "tabs",
    "bookmarks",
    "storage",
    "alarms",
    "contextMenus",
    "tabGroups",
    "cookies"
  ],
  "action": {
    "default_popup": "popup.html",
    "default_icon": {
      "16": "images/icon16.png",
      "48": "images/icon48.png",
      "128": "images/icon128.png"
    }
  },
  "background": {
    "scripts": [
      "browser-polyfill.js",
      "browser-detect.js",
      "background.js"
    ]
  },
  "icons": {
    "16": "images/icon16.png",
    "48": "images/icon48.png",
    "128": "images/icon128.png"
  },
  "commands": {
    "quick-backup": {
      "suggested_key": {
        "default": "Ctrl+Shift+B",
        "mac": "Command+Shift+B"
      },
      "description": "__MSG_quickBackupDesc__"
    }
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "smart-tab-booker@example.com",
      "strict_min_version": "142.0",
      "data_collection_permissions": {
        "required": [
          "none"
        ]
      }
    }
  }
}