Examine source code of ProxyToggler

{
  "description": "Switches the proxy between none and system usage",
  "manifest_version": 2,
  "name": "ProxyToggler",
  "icons": {
    "26": "icons/icons8-link-26.png"
  },
  "version": "0.1",
  "background": {
    "scripts": [
      "background.js"
    ]
  },
  "options_ui": {
    "page": "settings/index.html"
  },
  "browser_action": {
    "default_title": "ProxyToggler"
  },
  "permissions": [
    "proxy",
    "storage",
    "notifications"
  ],
  "applications": {
    "gecko": {
      "id": "proxyToggler@bitscode.dev"
    }
  }
}