Add Netbird version tracking to client metrics

Integrate Netbird version into VictoriaMetrics backend and metrics labels. Update `ClientMetrics` constructor and metric name formatting to include version information.

client/internal/engine.go

@@ -66,6 +66,7 @@ import (
 	signal "github.com/netbirdio/netbird/shared/signal/client"
 	sProto "github.com/netbirdio/netbird/shared/signal/proto"
 	"github.com/netbirdio/netbird/util"
+	"github.com/netbirdio/netbird/version"
 )
 
 // PeerConnectionTimeoutMax is a timeout of an initial connection attempt to a remote peer.
@@ -278,7 +279,7 @@ func NewEngine(
 		connSemaphore:  semaphoregroup.NewSemaphoreGroup(connInitLimit),
 		probeStunTurn:  relay.NewStunTurnProbe(relay.DefaultCacheTTL),
 		jobExecutor:    jobexec.NewExecutor(),
-		clientMetrics:  metrics.NewClientMetrics(deploymentType, true),
+		clientMetrics:  metrics.NewClientMetrics(deploymentType, version.NetbirdVersion(), true),
 	}
 
 	log.Infof("I am: %s", config.WgPrivateKey.PublicKey().String())