Feature/add nodejs peer

[Nkovaturient]

Issue : #214

Description:

This PR adds a Node.js peer to the Universal Connectivity project.

Establishing and accepting server-style TCP connections with Go and Rust peers.
Initiating direct connections to browsers via WebRTC.
Accepting connections from browsers via WebRTC-Direct and WebSockets.

Key Implementations:

• Libp2p Node Setup: Multi-transport support (TCP, WebRTC, WebSockets)
• Interoperability: Node.js <-> Go/Rust via TCP ; Node.js <-> Browser via WebRTC/WebTransport (refining)
• PubSub Messaging: GossipSub-based message exchange
• Peer Discovery: mDNS, DHT, PubSub Peer Discovery
• Robust Dialing: Improved error handling & retry logic for cross-peer connections
• Testing Suite: WebRTC browser-node tests via Puppeteer & Jest

Next Steps for Further Robustness:

🔹 Implement DCUtR (Direct Connection Upgrade through Relay) for NAT traversal
🔹 Enhance WebRTC signaling reliability across peers
🔹 Optimize message streaming performance for large-scale chat/file sharing

Note to Maintainer

🔹 kindly review and guide if I'm on the right track

[devlux76]

I test this and wanted to say great work! Seems to be working excellent! Here's hoping they merge your PR soon.