speak subtitles extension

manifest.json

{
  "update_url": "https://clients2.google.com/service/update2/crx",
  "manifest_version": 3,
  "name": "__MSG_name__",
  "version": "2.0.0",
  "default_locale": "en",
  "description": "__MSG_description__",
  "icons": {
    "32": "img/icon-extension-32.png",
    "48": "img/icon-extension-48.png",
    "128": "img/icon-extension-128.png",
    "256": "img/icon-extension-256.png"
  },
  "action": {
    "default_icon": {
      "16": "img/icon-action-16.png",
      "24": "img/icon-action-24.png",
      "32": "img/icon-action-32.png",
      "48": "img/icon-action-48.png",
      "128": "img/icon-action-128.png"
    },
    "default_title": "__MSG_page_action_default_title__",
    "default_popup": "page-action.html"
  },
  "background": {
    "service_worker": "background.js"
  },
  "content_scripts": [
    {
      "matches": [
        "https://*.youtube.com/*",
        "https://*.pluralsight.com/*"
      ],
      "all_frames": false,
      "js": [
        "content-script.js"
      ],
      "run_at": "document_idle"
    }
  ],
  "minimum_chrome_version": "88",
  "options_page": "page-options.html",
  "permissions": [
    "storage",
    "tts",
    "declarativeContent"
  ]
}