Examine source code of Armadio Meet Mod

{
  "manifest_version": 2,
  "name": "Armadio Meet",
  "version": "1.0.3b",
  "description": "Google Meet++ by Armadio",
  "applications": {
    "gecko": {
      "id": "armadio@meet.mod"
    }
  },
  "background": {
    "scripts": [
      "background.js"
    ],
    "persistent": false
  },
  "permissions": [
    "contextMenus",
    "storage",
    "tabs"
  ],
  "content_scripts": [
    {
      "css": [
        "themes/theme.css",
        "styles.css"
      ],
      "run_at": "document_start",
      "js": [
        "jquery-3.6.0.min.js",
        "content.js",
        "scripts/buttons.js"
      ],
      "matches": [
        "https://meet.google.com/*"
      ]
    }
  ],
  "page_action": {
    "default_icon": {
      "16": "images/icon16.png",
      "32": "images/icon32.png",
      "64": "images/icon64.png",
      "128": "images/icon128.png"
    },
    "default_title": "Armadio Meet",
    "default_popup": "popup/popup.html"
  },
  "icons": {
    "16": "images/icon16.png",
    "32": "images/icon32.png",
    "64": "images/icon64.png",
    "128": "images/icon128.png"
  }
}