Examine source code of Multi Time Tracker

{
  "manifest_version": 2,
  "name": "Multi Time Tracker",
  "version": "1.1",
  "description": "Time tracker con start / pause / stop, più attività contemporanee e conversione in ore decimali.",
  "author": "Pietro Roversi",
  "browser_specific_settings": {
    "gecko": {
      "id": "multi-time-tracker@pietroroversi.com",
      "strict_min_version": "109.0",
      "data_collection_permissions": {
        "collects_personal_data": false,
        "collects_usage_data": false,
        "required": [
          "none"
        ]
      }
    }
  },
  "browser_action": {
    "default_popup": "popup.html",
    "default_title": "Multi Time Tracker"
  },
  "background": {
    "scripts": [
      "service_worker.js"
    ]
  },
  "permissions": [
    "storage",
    "alarms",
    "notifications"
  ],
  "icons": {
    "16": "icons/icon16.png",
    "48": "icons/icon48.png",
    "128": "icons/icon128.png"
  }
}