Add NTP service

adapter/router.go

@@ -41,6 +41,8 @@ type Router interface {
 	PackageManager() tun.PackageManager
 	Rules() []Rule
 
+	TimeService
+
 	ClashServer() ClashServer
 	SetClashServer(server ClashServer)
 

adapter/time.go

@@ -0,0 +1,8 @@
+package adapter
+
+import "time"
+
+type TimeService interface {
+	Service
+	TimeFunc() func() time.Time
+}