Examine source code of Roblox Menu Restore

{
  "manifest_version": 2,
  "name": "Roblox Menu Restore",
  "version": "1.4",
  "description": "fixes roblox's stupid update, brings back menu toggle, made by HaruSoftCat on twitter. fixes saved menu state.",
  "icons": {
    "16": "icons/icon16.png",
    "32": "icons/icon32.png",
    "48": "icons/icon48.png",
    "128": "icons/icon128.png",
    "256": "icons/icon256.png",
    "512": "icons/icon512.png"
  },
  "browser_action": {
    "default_title": "Roblox Menu Restore",
    "default_icon": {
      "16": "icons/icon16.png",
      "32": "icons/icon32.png",
      "48": "icons/icon48.png"
    }
  },
  "content_scripts": [
    {
      "matches": [
        "https://www.roblox.com/*"
      ],
      "js": [
        "content.js"
      ],
      "css": [
        "styles.css"
      ]
    }
  ],
  "browser_specific_settings": {
    "gecko": {
      "id": "roblox-sidebar-restore@harusoftcat",
      "strict_min_version": "109.0",
      "data_collection_permissions": {
        "required": [
          "none"
        ],
        "optional": []
      }
    }
  }
}