Initial implementation of a Peer for WebSocket communication with SOCKS5 proxy support

[JavaHammes]

This pull request introduces the initial version of a Peer structure, offering the following capabilities:

• WebSocket connection management:
  • Establishing, reading from, writing to, and gracefully closing WebSocket connections.
• SOCKS5 proxy support:
  • Optional configuration to tunnel WebSocket connections through a SOCKS5 proxy.
• Standalone functionality:
  • Operates independently of the Tor network, relying solely on SOCKS5 proxy for network configuration.

Current Limitations:

• Single peer connection:
  • Only one concurrent connection to a single peer is supported at this stage.
• Text message exchange:
  • Communication is currently limited to simple text messages.

Next Steps:

• Create comprehensive unit tests.
• Implement support for multiple concurrent peer connections.
• Enable more complex data exchange beyond simple text messages.

Example Usage

    peer_one, err := peer.NewPeer("hostname", "port", "proxyAddr") 

    peer_two, err := peer.NewPeer("hostname", "port", "proxyAddr") 

    peer_one.Listen()
    peer_two.Listen()

    err_connect := peer_one.Connect(fmt.Sprintf("ws://%s:%s", peer_two.Hostname, peer_two.Port))

    err_message := peer_one.WriteMessage("Hello Peer Two!")

    v, err := peer_two.ReadMessage()

    peer_one.Shutdown()
    peer_two.Shutdown()

This pull request should first be merged, when #15 is merged into this branch.

Closes #10