feat: add audio features and sounds to the game

frontend/src/app/shared/directives/play-sound.directive.ts

@@ -0,0 +1,15 @@
+import { Directive, HostListener, inject } from '@angular/core';
+import { AudioService } from '../services/audio.service';
+
+@Directive({
+  selector: '[appPlaySound]',
+  standalone: true
+})
+export class PlaySoundDirective {
+  private audioService = inject(AudioService);
+
+  @HostListener('click')
+  onClick() {
+    this.audioService.playBetSound();
+  }
+}