feat(Button): 实现按钮预制体，测试倒计时功能，添加从测试开始的按钮

Assets/Script/Gameplay/Global/GameFlowManager.cs

@@ -7,26 +7,31 @@ namespace Script.Gameplay.Global
 {
     public enum GameState
     {
-        Boot,        // 初始化
-        MainMenu,    // 主菜单
-        Playing,     // 游戏中
-        Paused,      // 暂停
-        GameOver,    // 游戏结束
-        Victory      // 胜利
+        Boot, // 初始化
+        MainMenu, // 主菜单
+        Playing, // 游戏中
+        Paused, // 暂停
+        GameOver, // 游戏结束
+        Victory // 胜利
     }
-    
+
     public class GameFlowManager : MonoSingleton<GameFlowManager>
     {
+        public bool IsOpenRestartGameOnCountdownFinish = true;
+
         private void Start()
         {
             GameCountdownManager.Instance.StartLevelTimer();
-            GameCountdownManager.Instance.OnFinish.AddListener(RestartGame);
+            GameCountdownManager.Instance.OnFinish.AddListener(() =>
+                {
+                    if (IsOpenRestartGameOnCountdownFinish) RestartGame();
+                }
+            );
         }
 
         public void RestartGame()
         {
             GameManager.Instance.ReStartGame();
         }
-
     }
 }