Examine source code of Custom Input Navigator

{
  "manifest_version": 3,
  "name": "Custom Input Navigator",
  "version": "1.0",
  "description": "Cycle through text inputs using the ` key.",
  "permissions": [],
  "content_scripts": [
    {
      "matches": [
        "<all_urls>"
      ],
      "js": [
        "content.js"
      ],
      "run_at": "document_idle"
    }
  ],
  "browser_specific_settings": {
    "gecko": {
      "id": "focus-input-extension-by-bibhab.dev@gmail.com",
      "strict_min_version": "109.0"
    }
  }
}