Fix clash tracker timeout

experimental/clashapi/trafficontrol/tracker.go

@@ -31,6 +31,7 @@ type Metadata struct {
 type tracker interface {
 	ID() string
 	Close() error
+	Leave()
 }
 
 type trackerInfo struct {
@@ -75,6 +76,10 @@ func (tt *tcpTracker) Close() error {
 	return tt.Conn.Close()
 }
 
+func (tt *tcpTracker) Leave() {
+	tt.manager.Leave(tt)
+}
+
 func NewTCPTracker(conn net.Conn, manager *Manager, metadata Metadata, router adapter.Router, rule adapter.Rule) *tcpTracker {
 	uuid, _ := uuid.NewV4()
 
@@ -158,6 +163,10 @@ func (ut *udpTracker) Close() error {
 	return ut.PacketConn.Close()
 }
 
+func (ut *udpTracker) Leave() {
+	ut.manager.Leave(ut)
+}
+
 func NewUDPTracker(conn N.PacketConn, manager *Manager, metadata Metadata, router adapter.Router, rule adapter.Rule) *udpTracker {
 	uuid, _ := uuid.NewV4()