Refactor Measure and MeasureResult class in model and agent

[lsulak]

Background

Currently the implementation of MeasureResult is only on the model side, and does not carry type information. Also, it's not used in Agent - we need to somehow connect those two modules.

Feature

Improve the current MeasureResult class so that it carries information about type and also add support for having additional metadata / helper measures used - it can be an empty Map for now.

Also add a mapping between these DTO objects and internal types in the Agent - feel free to use MeasuresMapper for this, it might be what we need here.

Proposed Solution

case class MeasureResultDTO(
                           mainValue: TypedValue,
                           supportValues: Map[String, TypedValue] = Map.empty
                           )


object MeasureResultDTO {
  case class TypedValue(
                         value: String,
                         valueType: String //actually enumaration, but those can cause issues in in serde
                       )
}


//count -> MeasureResultDTO in JSON format
//"mainValue": {
//  "value": "103312",
//  "valueType": "Long"
//}
//"supportValues": {}


//avg -> MeasureResultDTO in JSON format
//"mainValue": {
//  "value": "2.5",
//  "valueType": "BigDecimal"
//}
//"supportValues": {
//   "count": {
//     "value": "2",
//      "valueType": "Long"
//    }
//   "total": {
//     "value": "5",
//      "valueType": "BigDecimal"
//    }
// }

.addLongMeasure("count", 103312)