feat: NCS-63 User account implementation (#2)

User Profile info, no game before login/register, menu bar

---------

Co-authored-by: Lala, Shahd <Shahd.Lala@sybit.de>
Co-authored-by: shahdlala66 <shahd.lala66@gmail.com>
Reviewed-on: #2

src/app/components/toolbar/toolbar.component.ts

@@ -0,0 +1,87 @@
+import { Component, DestroyRef, OnInit, inject } from '@angular/core';
+import { CommonModule } from '@angular/common';
+import { Router } from '@angular/router';
+import { takeUntilDestroyed } from '@angular/core/rxjs-interop';
+import { AuthService } from '../../services/auth.service';
+import { AuthDialogService } from '../../services/auth-dialog.service';
+import { CurrentUser } from '../../models/auth.models';
+import { LoginDialogComponent } from '../login-dialog/login-dialog.component';
+import { RegisterDialogComponent } from '../register-dialog/register-dialog.component';
+import { ThemeService } from '../../services/theme.service';
+
+@Component({
+  selector: 'app-toolbar',
+  standalone: true,
+  imports: [CommonModule, LoginDialogComponent, RegisterDialogComponent],
+  templateUrl: './toolbar.component.html',
+  styleUrl: './toolbar.component.css'
+})
+export class ToolbarComponent implements OnInit {
+  private readonly destroyRef = inject(DestroyRef);
+  private readonly authService = inject(AuthService);
+  private readonly authDialogService = inject(AuthDialogService);
+  private readonly themeService = inject(ThemeService);
+  private readonly router = inject(Router);
+
+  currentUser: CurrentUser | null = null;
+  showLoginDialog = false;
+  showRegisterDialog = false;
+  isDarkMode = false;
+
+  ngOnInit(): void {
+    this.authService.currentUser$
+      .pipe(takeUntilDestroyed(this.destroyRef))
+      .subscribe((user) => {
+        this.currentUser = user;
+      });
+
+    this.authDialogService.dialogState$
+      .pipe(takeUntilDestroyed(this.destroyRef))
+      .subscribe((state) => {
+        this.showLoginDialog = state === 'login';
+        this.showRegisterDialog = state === 'register';
+      });
+
+    this.themeService.darkMode$
+      .pipe(takeUntilDestroyed(this.destroyRef))
+      .subscribe((isDarkMode) => {
+        this.isDarkMode = isDarkMode;
+      });
+  }
+
+  openLoginDialog(): void {
+    this.authDialogService.openLogin();
+  }
+
+  closeLoginDialog(): void {
+    this.authDialogService.close();
+  }
+
+  openRegisterDialog(): void {
+    this.authDialogService.openRegister();
+  }
+
+  closeRegisterDialog(): void {
+    this.authDialogService.close();
+  }
+
+  logout(): void {
+    this.authService.logout();
+  }
+
+  toggleTheme(): void {
+    this.themeService.toggleTheme();
+  }
+
+  goToProfile(): void {
+    this.router.navigate(['/profile']);
+  }
+
+  onLoginSuccess(): void {
+    this.closeLoginDialog();
+  }
+
+  onRegisterSuccess(): void {
+    this.closeRegisterDialog();
+  }
+}