- Remove DNSSetter.java (System.setProperty doesn't affect Android DNS)
- Update NetworkUtils with 4 DNS over HTTPS providers:
* Google DNS (8.8.8.8) - Primary
* Cloudflare (1.1.1.1) - Secondary
* AdGuard (94.140.14.14) - Tertiary
* Quad9 (9.9.9.9) - Quaternary
- Update DeviceRegistry to use NetworkUtils client
- Update UpdateManager to use NetworkUtils client
- Remove DNSSetter call from PlayerActivity
This ensures the app works even when ISPs block specific DNS servers.
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