fix: implement repository test

changes:
- Implement repository test for the sqlite backend
- Add testutils package to start container images
- Remove deprecated till_date in measured values
- Renamed columns of the table humidities, pressures and temperatures

pkg/types/measuredValue.go

@@ -11,8 +11,7 @@ type MeasuredValue struct {
 	ID           string     `json:"id" xml:"id"`
 	Value        float64    `json:"value,string" xml:"value,string"`
 	ValueType    string     `json:"value_type" xml:"value_type"`
-	FromDate     time.Time  `json:"from_date" xml:"from_date"`
-	TillDate     time.Time  `json:"till_date" xml:"till_date"`
+	Date         time.Time  `json:"date" xml:"date"`
 	SensorID     string     `json:"sensor_id" xml:"sensor_id"`
 	CreationDate *time.Time `json:"creation_date" xml:"creation_date"`
 	UpdateDate   *time.Time `json:"update_date" xml:"update_date"`