Examine source code of Sort the Meet

{
  "name": "Sort the Meet",
  "description": "Show yourself in alphabetical order in participants list",
  "version": "1.2.1",
  "content_scripts": [
    {
      "matches": [
        "https://meet.google.com/*"
      ],
      "js": [
        "js/inject.js"
      ],
      "run_at": "document_idle",
      "all_frames": false
    }
  ],
  "icons": {
    "16": "icons/sort16.png",
    "48": "icons/sort48.png",
    "128": "icons/sort128.png"
  },
  "browser_action": {
    "default_icon": "icons/sort48.png"
  },
  "web_accessible_resources": [
    "js/sort-users.js"
  ],
  "manifest_version": 2,
  "browser_specific_settings": {
    "gecko": {
      "id": "{9603dea7-bd2c-4e3c-bbe2-89119801f574}"
    }
  }
}