read all sensors implemented

internal/domains/sensors/repository.go

@@ -116,7 +116,14 @@ func (i *inMemory) ReadSensorValues(sensorID string, from time.Time, to time.Tim
 }
 
 func (i *inMemory) ReadAllSensors() ([]Sensor, error) {
-	panic("unimplemented")
+	i.mu.Lock()
+	defer i.mu.Unlock()
+
+	sensors := make([]Sensor, 0, len(i.sensors))
+	for _, s := range i.sensors {
+		sensors = append(sensors, *s)
+	}
+	return sensors, nil
 }
 
 type DecoratorRepo struct {