feat: add ID() method to Schedule interface to get Schedule name

schedule.go

@@ -240,7 +240,13 @@ func negativeToZero(nextRunDuration time.Duration) time.Duration {
 	}
 	return nextRunDuration
 }
+
 // State Returns the current State of the Schedule
 func (s *Schedule) State() State {
 	return s.state
 }
+
+// ID Returns the Schedule ID
+func (s *Schedule) ID() string {
+	return s.id
+}