refactor(@core): refactor data services for better integration (#1997)

With this change all components, which used data services before, now use abstract classes of service interfaces, mock services extend interface services, CoreModule contains code to inject a needed implementation of some service.

src/app/@core/mock/mock-data.module.ts

@@ -0,0 +1,65 @@
+import { NgModule, ModuleWithProviders } from '@angular/core';
+import { CommonModule } from '@angular/common';
+
+import { UserService } from './users.service';
+import { ElectricityService } from './electricity.service';
+import { SmartTableService } from './smart-table.service';
+import { UserActivityService } from './user-activity.service';
+import { OrdersChartService } from './orders-chart.service';
+import { ProfitChartService } from './profit-chart.service';
+import { TrafficListService } from './traffic-list.service';
+import { PeriodsService } from './periods.service';
+import { EarningService } from './earning.service';
+import { OrdersProfitChartService } from './orders-profit-chart.service';
+import { TrafficBarService } from './traffic-bar.service';
+import { ProfitBarAnimationChartService } from './profit-bar-animation-chart.service';
+import { TemperatureHumidityService } from './temperature-humidity.service';
+import { SolarService } from './solar.service';
+import { TrafficChartService } from './traffic-chart.service';
+import { StatsBarService } from './stats-bar.service';
+import { CountryOrderService } from './country-order.service';
+import { StatsProgressBarService } from './stats-progress-bar.service';
+import { VisitorsAnalyticsService } from './visitors-analytics.service';
+import { SecurityCamerasService } from './security-cameras.service';
+
+const SERVICES = [
+  UserService,
+  ElectricityService,
+  SmartTableService,
+  UserActivityService,
+  OrdersChartService,
+  ProfitChartService,
+  TrafficListService,
+  PeriodsService,
+  EarningService,
+  OrdersProfitChartService,
+  TrafficBarService,
+  ProfitBarAnimationChartService,
+  TemperatureHumidityService,
+  SolarService,
+  TrafficChartService,
+  StatsBarService,
+  CountryOrderService,
+  StatsProgressBarService,
+  VisitorsAnalyticsService,
+  SecurityCamerasService,
+];
+
+@NgModule({
+  imports: [
+    CommonModule,
+  ],
+  providers: [
+    ...SERVICES,
+  ],
+})
+export class MockDataModule {
+  static forRoot(): ModuleWithProviders {
+    return <ModuleWithProviders>{
+      ngModule: MockDataModule,
+      providers: [
+        ...SERVICES,
+      ],
+    };
+  }
+}