feat(blackjack): add animated number component and usage

frontend/src/app/feature/game/blackjack/blackjack.component.html

@@ -6,19 +6,6 @@
       <app-dealer-hand [cards]="dealerCards()"></app-dealer-hand>
       <app-player-hand [cards]="playerCards()"></app-player-hand>
 
-      @if (isActionInProgress()) {
-        <div class="flex justify-center">
-          <div
-            class="card p-4 flex items-center gap-3 animate-pulse bg-deep-blue-light border border-deep-blue-light/50"
-          >
-            <div
-              class="w-5 h-5 rounded-full border-2 border-white border-t-transparent animate-spin"
-            ></div>
-            <span>{{ currentAction() }}</span>
-          </div>
-        </div>
-      }
-
       @if (gameInProgress()) {
         <app-game-controls
           [playerCards]="playerCards()"