0.4.12

Implement new session-based gateway architecture

- Introduced FrameReader for handling incoming frames and decryption.
- Added Handshake and HandshakeReplayGuard for secure connection establishment.
- Created ProxyHandle to manage connections and data flow between peers.
- Developed read and write loops for efficient data handling in the gateway session.
- Established Session struct to encapsulate session state and management.
- Implemented GatewaySupervisor to manage connection lifecycle and reconnections.
- Added comprehensive tests for the new session-based gateway pipeline, ensuring reliability under load and end-to-end functionality.