chore: add husky pre-commit hook and lint-staged configuration

- Created a pre-commit hook in .husky to run lint-staged.
- Added .lintstagedrc.mjs to format frontend files with Prettier and apply Spotless to backend Java files.
- Introduced .prettierignore to exclude specific directories from formatting.

frontend/src/app/components/dashboard-page/dashboard-page.ts

@@ -9,32 +9,33 @@ import { SessionService } from '../../services/session.service';
 import { WorkspaceService } from '../../services/workspace.service';
 
 @Component({
-  selector: 'app-dashboard-page',
-  imports: [FontAwesomeModule, MatButtonModule, MatProgressBarModule],
-  templateUrl: './dashboard-page.html',
-  styleUrl: './dashboard-page.css',
+	selector: 'app-dashboard-page',
+	imports: [FontAwesomeModule, MatButtonModule, MatProgressBarModule],
+	templateUrl: './dashboard-page.html',
+	styleUrl: './dashboard-page.css',
 })
 export class DashboardPage {
-  readonly faTableCellsLarge = faTableCellsLarge;
-  private readonly http = inject(HttpClient);
-  private readonly router = inject(Router);
-  readonly session = inject(SessionService);
-  readonly workspace = inject(WorkspaceService);
-  readonly userInitial = computed(() => this.session.username().charAt(0).toUpperCase());
-  readonly helloMessage = signal('');
+	readonly faTableCellsLarge = faTableCellsLarge;
+	private readonly http = inject(HttpClient);
+	private readonly router = inject(Router);
+	readonly session = inject(SessionService);
+	readonly workspace = inject(WorkspaceService);
+	readonly userInitial = computed(() => this.session.username().charAt(0).toUpperCase());
+	readonly helloMessage = signal('');
 
-  constructor() {
-    this.workspace.loadApartments();
-  }
+	constructor() {
+		this.workspace.loadApartments();
+	}
 
-  checkConnection(): void {
-    this.http.get('/api/hello', { responseType: 'text' }).subscribe({
-      next: (message) => this.helloMessage.set(message),
-      error: (error) => this.helloMessage.set(`Failed to connect to backend: ${error.statusText}`),
-    });
-  }
+	checkConnection(): void {
+		this.http.get('/api/hello', { responseType: 'text' }).subscribe({
+			next: (message) => this.helloMessage.set(message),
+			error: (error) =>
+				this.helloMessage.set(`Failed to connect to backend: ${error.statusText}`),
+		});
+	}
 
-  showApartments(): void {
-    this.router.navigateByUrl('/apartments');
-  }
+	showApartments(): void {
+		this.router.navigateByUrl('/apartments');
+	}
 }