feat: add icon button component and integrate into cart item for improved UI

src/app/shared/components/cart-item/cart-item.component.html

@@ -41,9 +41,11 @@
         (increase)="onIncrease()"
         (decrease)="onDecrease()"
       />
-      <button class="border-0 bg-transparent d-inline-flex align-items-center justify-content-center cart-item-remove-btn" type="button" (click)="onRemove()">
-        <i class="fa-solid fa-trash"></i>
-      </button>
+      <app-icon-button
+        variant="trash"
+        class="cart-item-remove-btn"
+        (click)="onRemove()"
+      />
     </div>
   </div>
 </article>