feat: implement hs:// protocol and p2pmd app

[akhileshthite]

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Learn more: https://github.com/p2plabsxyz/peersky-browser/tree/feat/protocol-hs/src/pages/p2p/p2pmd

[akhileshthite]

⚠️ Known Limitations


Mobile: "localhost is not a valid IP address" (private/UDP rooms)

1. On mobile Holesail clients, private (secure) and/or UDP rooms produce a "localhost is not a valid IP address" error. This is something with the Holesail mobile app; our server/host always binds to 127.0.0.1.

Mobile: Connection drops on iOS sleep

3. When an iPhone goes to sleep, iOS suspends all background network connections, causing the Holesail tunnel to time out (connection timed out).
   On wake:

• The Holesail mobile app needs to manually restart the client connection to re-establish its DHT tunnel. This is an iOS + Holesail app limitation, not something PeerSky can control.