[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

relay/server/store_test.go

@@ -0,0 +1,40 @@
+package server
+
+import (
+	"context"
+	"testing"
+
+	"go.opentelemetry.io/otel"
+
+	"github.com/netbirdio/netbird/relay/metrics"
+)
+
+func TestStore_DeletePeer(t *testing.T) {
+	s := NewStore()
+
+	m, _ := metrics.NewMetrics(context.Background(), otel.Meter(""))
+
+	p := NewPeer(m, []byte("peer_one"), nil, nil)
+	s.AddPeer(p)
+	s.DeletePeer(p)
+	if _, ok := s.Peer(p.String()); ok {
+		t.Errorf("peer was not deleted")
+	}
+}
+
+func TestStore_DeleteDeprecatedPeer(t *testing.T) {
+	s := NewStore()
+
+	m, _ := metrics.NewMetrics(context.Background(), otel.Meter(""))
+
+	p1 := NewPeer(m, []byte("peer_id"), nil, nil)
+	p2 := NewPeer(m, []byte("peer_id"), nil, nil)
+
+	s.AddPeer(p1)
+	s.AddPeer(p2)
+	s.DeletePeer(p1)
+
+	if _, ok := s.Peer(p2.String()); !ok {
+		t.Errorf("second peer was deleted")
+	}
+}