Examine source code of chatgpt-copy-button

{
  "manifest_version": 3,
  "name": "chatgpt-copy-button",
  "version": "1.0.0",
  "description": "Extension to help with copying ChatGPT answers as normalized text",
  "author": "Anatolii V. <volkodavav@gmail.com>",
  "icons": {
    "16": "icon16.png",
    "48": "icon48.png",
    "128": "icon128.png",
    "300": "icon300.png"
  },
  "content_scripts": [
    {
      "matches": [
        "*://*.chatgpt.com/*"
      ],
      "js": [
        "content.js"
      ],
      "css": [
        "content.css"
      ]
    }
  ],
  "web_accessible_resources": [
    {
      "resources": [
        "content.js"
      ],
      "matches": [
        "*://*.chatgpt.com/*"
      ]
    }
  ],
  "browser_specific_settings": {
    "gecko": {
      "id": "chatgpt-copy-button@volkodavav.gmail.com"
    }
  }
}