feat: 골드 생선 부족 시 경고 팝업 추가

Gameton-06/Assets/Gameton/Scripts/UI/FishPopup.cs

@@ -0,0 +1,19 @@
+using System.Collections;
+using System.Collections.Generic;
+using UnityEngine;
+
+namespace TON
+{
+    public class FishPopup : UIBase
+    {
+        private void OnEnable()
+        {
+            Invoke(nameof(HidePopup), 3f);
+        }
+
+        private void HidePopup()
+        {
+            UIManager.Hide<FishPopup>(UIList.FishPopup);
+        }
+    }
+}