✨ Added config/statistics services to call API

src/app/services/config.service.ts

@@ -0,0 +1,25 @@
+import { Injectable } from '@angular/core';
+import { environment } from '../../environment';
+import { HttpClient } from '@angular/common/http';
+import { AuthService } from './auth.service';
+import { Observable } from 'rxjs';
+import { SystemConfig } from '../model/SystemConfig';
+
+@Injectable({
+  providedIn: 'root',
+})
+export class ConfigService {
+  constructor(private http: HttpClient, private authService: AuthService) {}
+
+  public loadConfig(): Observable<SystemConfig> {
+    return this.http.get<SystemConfig>(`${environment.apiURL}/admin/config`, {
+      headers: this.authService.getAuthHeaders(),
+    });
+  }
+
+  public saveConfig(config: SystemConfig): Observable<SystemConfig> {
+    return this.http.patch<SystemConfig>(`${environment.apiURL}/admin/config`, config, {
+      headers: this.authService.getAuthHeaders(),
+    });
+  }
+}

src/app/services/statistics.service.ts

@@ -0,0 +1,19 @@
+import { Injectable } from '@angular/core';
+import { environment } from '../../environment';
+import { HttpClient } from '@angular/common/http';
+import { Stats } from '../model/Stats';
+import { AuthService } from './auth.service';
+import { Observable } from 'rxjs';
+
+@Injectable({
+  providedIn: 'root',
+})
+export class StatisticsService {
+  constructor(private http: HttpClient, private authService: AuthService) {}
+
+  public loadStats(): Observable<Stats> {
+    return this.http.get<Stats>(`${environment.apiURL}/admin/stats`, {
+      headers: this.authService.getAuthHeaders(),
+    });
+  }
+}