Examine source code of ChatGPT enter

{
  "name": "ChatGPT enter press",
  "manifest_version": 2,
  "description": "allow to press enter on chat",
  "version": "0.4",
  "content_scripts": [
    {
      "matches": [
        "https://chatgpt.com/*"
      ],
      "js": [
        "content-script.js"
      ],
      "run_at": "document_end"
    }
  ],
  "browser_specific_settings": {
    "gecko": {
      "id": "chatgptq@h43z"
    }
  },
  "permissions": [
    "activeTab",
    "https://chatgpt.com/*"
  ]
}