Examine source code of Infinite Toolkit

{
  "manifest_version": 3,
  "name": "Infinite Toolkit",
  "version": "3.0.0",
  "description": "The Ultimate Toolkit App",
  "icons": {
    "48": "assets/logo.png"
  },
  "action": {
    "default_icon": "assets/logo.png",
    "default_popup": "popup/main.html"
  },
  "web_accessible_resources": [
    {
      "resources": [
        "assets/*",
        "libs/jquery.min.js"
      ],
      "matches": [
        "<all_urls>"
      ]
    }
  ],
  "content_scripts": [
    {
      "matches": [
        "<all_urls>"
      ],
      "js": [
        "libs/jquery.min.js",
        "content.js"
      ]
    }
  ],
  "permissions": [
    "activeTab",
    "storage",
    "scripting"
  ],
  "browser_specific_settings": {
    "gecko": {
      "id": "{123e4567-e89b-12d3-a456-426614171999}"
    }
  }
}