Is YouTube Channel Monetized?

manifest.json

{
  "update_url": "https://clients2.google.com/service/update2/crx",
  "name": "Is YouTube Channel Monetized?",
  "description": "Display information about YouTube channel monetization status",
  "version": "1.3",
  "manifest_version": 3,
  "icons": {
    "128": "icon128.png"
  },
  "background": {
    "service_worker": "background.js"
  },
  "content_scripts": [
    {
      "matches": [
        "https://*.youtube.com/*"
      ],
      "js": [
        "contentScript.js"
      ],
      "css": [
        "styles.css"
      ]
    }
  ],
  "permissions": [
    "webNavigation"
  ],
  "host_permissions": [
    "https://*.youtube.com/*"
  ]
}