Examine source code of VPN Master Pro - Secure proxy based VPN connection

{
  "manifest_version": 3,
  "name": "VPN Master Pro",
  "description": "VPN Master Pro - Secure proxy based VPN connection",
  "version": "3.1.1",
  "icons": {
    "16": "login_icon.png",
    "48": "login_icon.png",
    "128": "login_icon.png"
  },
  "background": {
    "scripts": [
      "runtime-config.js",
      "split-tunnel.js",
      "kill-switch.js",
      "adblock-domains.js",
      "adblock-domains-1.js",
      "adblock-matcher.js",
      "background.js",
      "simple-icon-badge.js"
    ]
  },
  "action": {
    "default_icon": {
      "16": "login_icon.png",
      "48": "login_icon.png",
      "128": "login_icon.png"
    },
    "default_popup": "index.html",
    "default_title": "VPN Master Pro"
  },
  "permissions": [
    "proxy",
    "storage",
    "downloads",
    "tabs",
    "webNavigation",
    "webRequest",
    "webRequestBlocking",
    "webRequestAuthProvider",
    "notifications",
    "activeTab",
    "unlimitedStorage",
    "scripting",
    "privacy",
    "contextMenus",
    "alarms"
  ],
  "host_permissions": [
    "<all_urls>"
  ],
  "web_accessible_resources": [
    {
      "resources": [
        "index.html",
        "welcome.html",
        "oauth-callback.html",
        "success.html",
        "background.js",
        "simple-icon-badge.js",
        "login_icon.png",
        "blocklist.json",
        "location-spoofing.js",
        "adblock-youtube-main.js"
      ],
      "matches": [
        "<all_urls>"
      ]
    }
  ],
  "content_scripts": [
    {
      "matches": [
        "<all_urls>"
      ],
      "js": [
        "location-spoofing.js"
      ],
      "run_at": "document_start",
      "all_frames": true
    },
    {
      "matches": [
        "<all_urls>"
      ],
      "js": [
        "adblock-cosmetics-data.js",
        "adblock-cosmetics.js"
      ],
      "run_at": "document_start",
      "all_frames": true
    },
    {
      "matches": [
        "*://*.youtube.com/*",
        "*://*.youtube-nocookie.com/*"
      ],
      "js": [
        "adblock-youtube.js"
      ],
      "run_at": "document_start",
      "all_frames": true
    }
  ],
  "incognito": "spanning",
  "content_security_policy": {
    "extension_pages": "script-src 'self'; object-src 'self'; connect-src 'self' https://us.i.posthog.com https://www.google-analytics.com https://ipapi.co https://my.vpnmasterpro.com https://api.vpnmasterpro.com https://account.vpnmasterpro.com https://vmpaccount.com https://api.ipify.org https://browsers.themebeaver.com https://api.emailjs.com;"
  },
  "minimum_chrome_version": "108",
  "browser_specific_settings": {
    "gecko": {
      "id": "vpnmasterpro@extension",
      "strict_min_version": "109.0"
    }
  }
}