Examine source code of Email Scraper for Ins

{
  "manifest_version": 2,
  "name": "Email Scraper for Ins",
  "homepage_url": "https://igemailextractor.echobot.dev",
  "description": "A smart business lead tool, Extracts emails from Instagram followers, following, hashtag, liker, commenter and location.",
  "default_locale": "en",
  "permissions": [
    "cookies",
    "storage",
    "identity",
    "unlimitedStorage",
    "https://*.instagram.com/*",
    "*://*.echobot.dev/*"
  ],
  "oauth2": {
    "client_id": "822420326057-m93k691553m6m1lj3l5jn2r40qjcg7rs.apps.googleusercontent.com",
    "scopes": [
      "https://www.googleapis.com/auth/userinfo.email"
    ]
  },
  "icons": {
    "16": "icons/16.png",
    "32": "icons/32.png",
    "48": "icons/48.png",
    "128": "icons/128.png"
  },
  "background": {
    "scripts": [
      "background.js"
    ],
    "persistent": false
  },
  "browser_action": {
    "default_title": "Email Scraper for Ins",
    "default_popup": "popup.html",
    "default_icon": {
      "16": "icons/16.png",
      "32": "icons/32.png",
      "48": "icons/48.png",
      "128": "icons/128.png"
    }
  },
  "content_scripts": [
    {
      "js": [
        "content-script.js"
      ],
      "matches": [
        "*://*.instagram.com/*"
      ],
      "run_at": "document_end",
      "all_frames": false
    },
    {
      "js": [
        "auth.js"
      ],
      "matches": [
        "*://*.echobot.dev/auth/success/igemailextractor*"
      ],
      "run_at": "document_end",
      "all_frames": false
    }
  ],
  "content_security_policy": "script-src 'self'; object-src 'self'",
  "web_accessible_resources": [
    "injected.js",
    "content-script.js",
    "auth.js",
    "popup.html"
  ],
  "version": "2.4.2",
  "browser_specific_settings": {
    "gecko": {
      "id": "{912f2086-ebf8-4fc0-a081-84dc84f0e814}"
    }
  }
}