Examine source code of Bolded LinkedIn

{
  "manifest_version": 3,
  "name": "Bolded LinkedIn",
  "version": "0.2.0",
  "description": "Bold maker extension for LinkedIn that adds a bold toggle button beside the emoji button.",
  "browser_specific_settings": {
    "gecko": {
      "id": "bolded-linkedin-composer@example.local",
      "data_collection_permissions": {
        "required": [
          "none"
        ]
      }
    }
  },
  "icons": {
    "48": "icons/Bolded-48.png",
    "96": "icons/Bolded.svg"
  },
  "content_scripts": [
    {
      "matches": [
        "*://www.linkedin.com/*"
      ],
      "all_frames": true,
      "js": [
        "content.js"
      ],
      "css": [
        "content.css"
      ],
      "run_at": "document_idle"
    }
  ]
}