[relay] Feature/relay integration (#2244)

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

client/ios/NetBirdSDK/client.go

@@ -168,7 +168,6 @@ func (c *Client) GetStatusDetails() *StatusDetails {
 			BytesTx:                    p.BytesTx,
 			ConnStatus:                 p.ConnStatus.String(),
 			ConnStatusUpdate:           p.ConnStatusUpdate.Format("2006-01-02 15:04:05"),
-			Direct:                     p.Direct,
 			LastWireguardHandshake:     p.LastWireguardHandshake.String(),
 			Relayed:                    p.Relayed,
 			RosenpassEnabled:           p.RosenpassEnabled,