Implement item metadata check in PreShopCreation

The ItemChecker class now includes functionality to handle item metadata during PreShopCreation. It adds a check for itemStack's metadata, strips any color from displayName if it exists or adds italics to itemName if the metadata is unique. This ensures correct preprocessing of items with metadata.

src/main/java/com/Acrobot/ChestShop/Listeners/PreShopCreation/ItemChecker.java

@@ -2,10 +2,12 @@
 
 import static com.Acrobot.ChestShop.Events.PreShopCreationEvent.CreationOutcome.INVALID_ITEM;
 
+import org.bukkit.ChatColor;
 import org.bukkit.event.EventHandler;
 import org.bukkit.event.EventPriority;
 import org.bukkit.event.Listener;
 import org.bukkit.inventory.ItemStack;
+import org.bukkit.inventory.meta.ItemMeta;
 
 import com.Acrobot.Breeze.Utils.MaterialUtil;
 import com.Acrobot.ChestShop.Events.PreShopCreationEvent;
@@ -29,6 +31,16 @@ public static void onPreShopCreation(PreShopCreationEvent event) {
             event.setOutcome(INVALID_ITEM);
             return;
         }
+
+        if (itemStack.hasItemMeta()) {
+            ItemMeta itemMeta = itemStack.getItemMeta();
+            if (itemMeta.hasDisplayName()) {
+                itemName = ChatColor.stripColor(itemMeta.getDisplayName());
+            } else if (!itemMeta.equals(new ItemStack(itemStack.getType()).getItemMeta())) {
+                itemName = ChatColor.ITALIC + itemName;
+            }
+        }
+
         event.setItemLine(itemName);
     }
 }