引入 UISerializationRoot 和 Item

- 完成 MenuForm 和 SelectRoleForm 的迁移

Assets/GameMain/Scripts/Presentation/Main/LevelUp/LevelUpController.cs

@@ -39,20 +39,9 @@ namespace SepCore.UI
                 return null;
             }
 
-            if (rawData.Rewards == null)
-            {
-                Log.Error("LevelUpFormController.BuildContext() rewards are null.");
-                return null;
-            }
-
             List<LevelUpRewardItemContext> props = new List<LevelUpRewardItemContext>(rawData.Rewards.Count);
             foreach (var reward in rawData.Rewards)
             {
-                if (reward == null)
-                {
-                    continue;
-                }
-
                 props.Add(new LevelUpRewardItemContext
                 {
                     Title = reward.Title,
@@ -80,7 +69,7 @@ namespace SepCore.UI
 
             if (userData != null)
             {
-                Log.Warning("LevelUpController.OpenUIAsync() userData type is invalid.");
+                Log.Error("LevelUpController.OpenUIAsync() userData type is invalid.");
                 return;
             }