chore: ntp service dep with sing, optional synchronize system time

ntp/time_unix.go

@@ -0,0 +1,14 @@
+//go:build linux || darwin
+
+package ntp
+
+import (
+	"time"
+
+	"golang.org/x/sys/unix"
+)
+
+func setSystemTime(nowTime time.Time) error {
+	timeVal := unix.NsecToTimeval(nowTime.UnixNano())
+	return unix.Settimeofday(&timeVal)
+}