feat(game): add blackjack game component and routing

frontend/src/app/feature/game/blackjack/components/dealer-hand/dealer-hand.component.ts

@@ -0,0 +1,29 @@
+import { ChangeDetectionStrategy, Component, Input } from '@angular/core';
+import { CommonModule } from '@angular/common';
+import { PlayingCardComponent } from '../playing-card/playing-card.component';
+import { Card } from '../../models/card.model';
+
+@Component({
+  selector: 'app-dealer-hand',
+  standalone: true,
+  imports: [CommonModule, PlayingCardComponent],
+  template: `
+    <div class="space-y-4">
+      <h3 class="section-heading text-2xl mb-4">Croupier's Karten</h3>
+      <div class="card p-6 !bg-red-500">
+        <div class="flex justify-center gap-4 min-h-[160px] p-4 border-2 border-red-400 rounded-lg">
+          <app-playing-card
+            *ngFor="let card of cards"
+            [value]="card.value"
+            [suit]="card.suit"
+            [hidden]="card.hidden"
+          ></app-playing-card>
+        </div>
+      </div>
+    </div>
+  `,
+  changeDetection: ChangeDetectionStrategy.OnPush,
+})
+export class DealerHandComponent {
+  @Input() cards: Card[] = [];
+}