Add position x,y for the component that triggered the analytics event

[hernandazevedozup]

#1404

We need to provide a way to add the position for the component when an analytics record is emmited.
Here is how Beagle React emmits the key position.

In flutter the beagle-web-core cannot provide the x, and y of the component that triggered the analytics event.
We need to provide a way to do it using dart.

See the code below on beagle_js_engine.dart

void _notifyAnalyticsCreateRecordListener(dynamic analyticsRecordMap) {
    if(beagleServiceLocator.isRegistered<AnalyticsProvider>()) {
      final analyticsProvider = beagleServiceLocator<AnalyticsProvider>();
      final record = AnalyticsRecord().fromMap(analyticsRecordMap);
      /*
       * TODO find a way to extract x,y of the component that triggered the event. Example:
       *  final componentId = analyticsRecord[analytics.component['id']];
       *  final position = findPositionByComponentId(componentId); // position.x, position.y
       */
      analyticsProvider.createRecord(record);
    }
  }