Resolve "To improve the device watching mechanism a fetch all after time interval method should be implemented"

Description

Implemented something different, than in #259 because the plan how we want to improve this changed. This should be also working with the planned upcoming changes to getting paths, adding mne, etc.

controller/event/event.go

@@ -7,6 +7,7 @@ type Event struct {
 	ID       uuid.UUID `json:"id,omitempty"`
 	EntityID uuid.UUID `json:"entity_id,omitempty"`
 	Type     string    `json:"type,omitempty"`
+	Paths    []string  `json:"paths,omitempty"`
 }
 
 const (
@@ -46,3 +47,13 @@ func NewUpdateEvent(entityID uuid.UUID) Event {
 		Type:     TypeUpdate,
 	}
 }
+
+// NewMneUpdateEvent creates a new update event for managed network elements.
+func NewMneUpdateEvent(entityID uuid.UUID, paths []string) Event {
+	return Event{
+		ID:       uuid.New(),
+		EntityID: entityID,
+		Type:     TypeUpdate,
+		Paths:    paths,
+	}
+}