* Move the handshake logic to separated struct
- The server will response to the client after it ready to process the peer
- Preload the response messages
* Fix deprecated lint issue
* Fix error handling
* [relay-server] Relay measure auth time (#2675)
Measure the Relay client's authentication time
This update adds new relay integration for NetBird clients. The new relay is based on web sockets and listens on a single port.
- Adds new relay implementation with websocket with single port relaying mechanism
- refactor peer connection logic, allowing upgrade and downgrade from/to P2P connection
- peer connections are faster since it connects first to relay and then upgrades to P2P
- maintains compatibility with old clients by not using the new relay
- updates infrastructure scripts with new relay service