Add EnergyDataModel and update TotalEnergyConsumptionChart to use it

lib/pages/analytics/models/energy_data_model.dart

@@ -1,7 +1,7 @@
 import 'package:equatable/equatable.dart';
 
-class EnergyData extends Equatable {
-  const EnergyData({
+class EnergyDataModel extends Equatable {
+  const EnergyDataModel({
     required this.date,
     required this.value,
   });