multi: add logs when subservers are starting

Also unified the log messages.

netann/chan_status_manager.go

@@ -172,6 +172,7 @@ func NewChanStatusManager(cfg *ChanStatusConfig) (*ChanStatusManager, error) {
 func (m *ChanStatusManager) Start() error {
 	var err error
 	m.started.Do(func() {
+		log.Info("Channel Status Manager starting")
 		err = m.start()
 	})
 	return err

netann/host_ann.go

@@ -58,6 +58,7 @@ func NewHostAnnouncer(cfg HostAnnouncerConfig) *HostAnnouncer {
 // Start starts the HostAnnouncer.
 func (h *HostAnnouncer) Start() error {
 	h.startOnce.Do(func() {
+		log.Info("HostAnnouncer starting")
 		h.wg.Add(1)
 		go h.hostWatcher()
 	})