Examine source code of Grandstream GRP Click2Dial

{
  "name": "Grandstream GRP Click2Dial",
  "version": "1.0.3.10",
  "description": "GRP260x firmware 1.0.7.33 or above version is required to support GRP Click2Dial add-on.",
  "manifest_version": 3,
  "action": {
    "default_title": "Grandstream GRP Click2Dial",
    "default_icon": "quicall/assets/logo.png"
  },
  "background": {
    "scripts": [
      "background/background.js"
    ],
    "type": "module"
  },
  "icons": {
    "16": "quicall/assets/logo_16x16.png",
    "48": "quicall/assets/logo_48x48.png",
    "128": "quicall/assets/logo_128x128.png"
  },
  "content_scripts": [
    {
      "matches": [
        "<all_urls>"
      ],
      "js": [
        "contentScripts/contentScript.js"
      ],
      "css": [
        "contentScripts/contentScript.css"
      ],
      "match_about_blank": true
    }
  ],
  "content_security_policy": {
    "extension_pages": "script-src 'self' 'wasm-unsafe-eval';"
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "grp260x-firefox-addon@grandstream.com",
      "strict_min_version": "113.0"
    }
  },
  "host_permissions": [
    "<all_urls>"
  ],
  "permissions": [
    "storage",
    "tabs",
    "contextMenus",
    "notifications",
    "alarms"
  ]
}