style: eliminat soroll de drop item amb maquina de café

Quan ix una maquina de café ja no se sent el so de drop item
per a millorar l'experiència sonora del joc.

Resol #91

source/sections/game.cpp

@@ -606,6 +606,7 @@ void Game::handleItemDrop(const std::shared_ptr<Balloon> &balloon, const std::sh
 
     if (DROPPED_ITEM != ItemType::COFFEE_MACHINE) {
         createItem(DROPPED_ITEM, balloon->getPosX(), balloon->getPosY());
+        playSound("item_drop.wav");
     } else {
         createItem(DROPPED_ITEM, player->getPosX(), param.game.game_area.rect.y - Item::COFFEE_MACHINE_HEIGHT);
         coffee_machine_enabled_ = true;
@@ -733,7 +734,6 @@ auto Game::dropItem() -> ItemType {
 // Crea un objeto item
 void Game::createItem(ItemType type, float x, float y) {
     items_.emplace_back(std::make_unique<Item>(type, x, y, param.game.play_area.rect, item_textures_[static_cast<int>(type) - 1], item_animations_[static_cast<int>(type) - 1]));
-    playSound("item_drop.wav");
 }
 
 // Vacia el vector de items