Examine source code of WhazzApp

{
  "manifest_version": 3,
  "name": "WhazzApp",
  "description": "Potencialize sua experiência no WhatsApp Web com essa extensão.",
  "version": "0.1.3",
  "key": "MIIBIjANBgkqhkiG9w0BAQEFAAOCAQ8AMIIBCgKCAQEAuqZp1N9Wet5HAO7sSBm6g4pXm3Ss1+XBnB4c2maXlIQL2+RLVzogQGVBJ4+KoYla+vtYv/mJnNqJRYQojUw11y4lTflAD+Zp8Ld93ZaqGAtIHqvReM024yCqNV/u2wcYv4CS1Xmdckqh1yGQruD6jGZ/43F6sWqfq6OU8ltSn9iKEIZIekcNh1cpKdw31zUceIhGDWf+vfQRv0MS4EX8aJWYOz/cu0nCUbwwk1KgQKkovf0hWxzFCP9eoHkEYc8rHx8GXkc1FqFYXPG+qn/l75gZaeb8jARi1pmgsFoFaoNM4Fp5NzbqCuzOSG8UX9H6qX7IUwF4x0EcDtZxonw8lQIDAQAB",
  "browser_specific_settings": {
    "gecko": {
      "id": "WhazzApp@a1th.dev",
      "strict_min_version": "109.0"
    }
  },
  "icons": {
    "16": "icon16.png",
    "48": "icon48.png",
    "128": "icon128.png"
  },
  "permissions": [
    "tabs",
    "storage",
    "contextMenus",
    "clipboardRead",
    "identity"
  ],
  "content_scripts": [
    {
      "matches": [
        "https://*/*",
        "http://*/*"
      ],
      "js": [
        "./static/js/content.js"
      ],
      "css": [
        "./static/css/main.acd8ccca.css"
      ]
    }
  ],
  "background": {
    "scripts": [
      "./static/js/service-worker.js"
    ]
  },
  "action": {
    "default_popup": "index.html"
  },
  "web_accessible_resources": [
    {
      "resources": [
        "static/assets/whatsapp-icon.svg",
        "static/assets/icon.png"
      ],
      "matches": [
        "<all_urls>"
      ]
    }
  ],
  "oauth2": {
    "client_id": "598554210645-vd0lq0lcli4usqc88j6mvo8gs7prrduq.apps.googleusercontent.com",
    "scopes": [
      "https://www.googleapis.com/auth/userinfo.email",
      "https://www.googleapis.com/auth/userinfo.profile",
      "https://www.googleapis.com/auth/contacts.readonly",
      "https://www.googleapis.com/auth/contacts"
    ]
  }
}