Examine source code of LyricFlow Sync

{
  "manifest_version": 3,
  "name": "LyricFlow Sync",
  "description": "Displays synchronized, real-time lyrics in a floating window for any web-based music player.",
  "version": "1.0.0",
  "author": "Melodic Stream Labs",
  "permissions": [
    "scripting",
    "storage",
    "activeTab"
  ],
  "host_permissions": [
    "https://open.spotify.com/*",
    "https://music.youtube.com/*",
    "https://www.deezer.com/*"
  ],
  "action": {
    "default_popup": "popup.html",
    "default_icon": {
      "48": "icons/icon-48.png",
      "128": "icons/icon-128.png"
    }
  },
  "icons": {
    "48": "icons/icon-48.png",
    "128": "icons/icon-128.png"
  },
  "background": {
    "scripts": [
      "background.js"
    ]
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "lyricflowsync@melodicstreamlabs.addons.mozilla.org",
      "strict_min_version": "142.0",
      "data_collection_permissions": {
        "required": [
          "none"
        ]
      }
    }
  }
}