Read aloud with auto language detection

manifest.json

{
  "update_url": "https://clients2.google.com/service/update2/crx",
  "name": "Read aloud with auto language detection",
  "version": "0.0.1.0",
  "description": "Text-to-speech web reader",
  "permissions": [
    "activeTab",
    "storage",
    "scripting"
  ],
  "commands": {
    "_execute_action": {
      "suggested_key": {
        "default": "Alt+R"
      }
    }
  },
  "icons": {
    "16": "loudspeaker 16.png",
    "32": "loudspeaker 32.png",
    "48": "loudspeaker 48.png",
    "128": "loudspeaker 128.png"
  },
  "background": {
    "service_worker": "background.js"
  },
  "action": {
    "default_icon": "loudspeaker 512.png"
  },
  "manifest_version": 3
}