feat: 스테이지 타이틀 데이터 매핑

Gameton-06/Assets/Gameton/Resources/UI/Stage/StagePage.prefab

@@ -645,6 +645,7 @@ MonoBehaviour:
   m_Name: 
   m_EditorClassIdentifier: 
   stageEntryButton: {fileID: 7881644893557345821}
+  stageTitle: {fileID: 5563710392318594705}
   stageImage: {fileID: 8654573821297256642}
   starGroup: {fileID: 3135648780667157969}
   starPrefab: {fileID: 1094882719706695268}

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

@@ -1,5 +1,6 @@
 using System.Collections;
 using System.Collections.Generic;
+using TMPro;
 using UnityEditor.SceneManagement;
 using UnityEngine;
 using UnityEngine.Assertions;
@@ -10,6 +11,7 @@ namespace TON
     public class LobbyUI_StagePage : MonoBehaviour
     {
         public Button stageEntryButton;
+        public TextMeshProUGUI stageTitle;
         public GameObject stageImage;
         public Transform starGroup;
         public StageStar starPrefab;
@@ -37,6 +39,7 @@ namespace TON
 
             SetStageImage();
             SetStageEntryInfo(index);
+            stageTitle.text = $"stage {index + 1}";
         }
 
         private void SetStageEntryInfo(int index)