Update PlayerInteractListener.java

Signed-off-by: Zoey <zoey@z0ey.de>

Author: Zoey2936

src/main/java/de/zoeyvid/stacker/Listener/PlayerInteractListener.java

@@ -5,6 +5,7 @@
 import de.zoeyvid.stacker.main;
 import org.bukkit.ChatColor;
 import org.bukkit.entity.Player;
+import org.bukkit.inventory.EquipmentSlot;
 import org.bukkit.event.EventHandler;
 import org.bukkit.event.Listener;
 import org.bukkit.event.player.PlayerInteractEntityEvent;