Examine source code of Proxy Manager

{
  "manifest_version": 3,
  "name": "__MSG_extName__",
  "description": "__MSG_extDescription__",
  "version": "1.0.39",
  "default_locale": "en",
  "permissions": [
    "storage",
    "proxy",
    "webRequest",
    "webRequestAuthProvider",
    "webRequestBlocking"
  ],
  "host_permissions": [
    "<all_urls>"
  ],
  "optional_host_permissions": [
    "<all_urls>"
  ],
  "action": {
    "default_icon": {
      "16": "icons/logo-16.png",
      "32": "icons/logo-32.png",
      "48": "icons/logo-48.png",
      "128": "icons/logo.png"
    },
    "default_popup": "popup/dist/index.html",
    "default_title": "__MSG_extName__"
  },
  "options_ui": {
    "page": "popup/dist/index.html",
    "open_in_tab": true
  },
  "background": {
    "scripts": [
      "background.js"
    ]
  },
  "icons": {
    "16": "icons/logo-16.png",
    "32": "icons/logo-32.png",
    "48": "icons/logo-48.png",
    "128": "icons/logo.png"
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "proxy_manager@inettools.net",
      "strict_min_version": "142.0",
      "data_collection_permissions": {
        "required": [
          "none"
        ]
      }
    },
    "gecko_android": {
      "strict_min_version": "142.0"
    }
  }
}