Examine source code of Apple TV Speed Controls

{
  "manifest_version": 3,
  "name": "Apple TV Speed Controls",
  "version": "0.1.2",
  "description": "Adjust Apple TV web playback speed with Q/W/E.",
  "browser_specific_settings": {
    "gecko": {
      "id": "{3b7b6a40-9a7a-4d0e-9d0a-4f38bb0d6a1f}",
      "strict_min_version": "142.0",
      "data_collection_permissions": {
        "required": [
          "none"
        ],
        "optional": []
      }
    }
  },
  "icons": {
    "16": "icons/icon.svg",
    "32": "icons/icon.svg",
    "48": "icons/icon.svg",
    "96": "icons/icon.svg",
    "128": "icons/icon.svg"
  },
  "action": {
    "default_title": "Apple TV Speed Controls",
    "default_icon": {
      "16": "icons/icon.svg",
      "32": "icons/icon.svg",
      "48": "icons/icon.svg"
    },
    "default_popup": "popup.html"
  },
  "permissions": [
    "storage"
  ],
  "host_permissions": [
    "https://tv.apple.com/*"
  ],
  "content_scripts": [
    {
      "matches": [
        "https://tv.apple.com/*"
      ],
      "js": [
        "content-script.js"
      ],
      "run_at": "document_idle"
    }
  ]
}