Replace hat emoji on battle screen with player.png sprite sheet

index.html

@@ -130,7 +130,7 @@
         <div class="battle-name-tag" id="battle-npc-name">OAK</div>
       </div>
       <div class="battle-player-side">
-        <div class="battle-sprite">🧢</div>
+        <div class="battle-player-sprite"></div>
         <div class="battle-name-tag" id="battle-player-name">ASH</div>
       </div>
     </div>