feat: added modules

core/interfaces/model_node_delegate.go

@@ -0,0 +1,10 @@
+package interfaces
+
+import "time"
+
+type ModelNodeDelegate interface {
+	ModelDelegate
+	UpdateStatus(active bool, activeTs *time.Time, status string) (err error)
+	UpdateStatusOnline() (err error)
+	UpdateStatusOffline() (err error)
+}