设置scriptable存储角色信息，调整编队系统部分代码逻辑

Assets/TeamCharacterDataBase/script/TeamCharacterLevelData.cs

@@ -0,0 +1,11 @@
+using System.Collections;
+using System.Collections.Generic;
+using UnityEngine;
+[CreateAssetMenu(fileName = "CharacterLevelData", menuName = "Character/CharacterLevelData")]
+public class TeamCharacterLevelData : ScriptableObject
+{
+    public Sprite LevelCSprite;
+    public Sprite LevelSSprite;
+    public Sprite LevelASprite;
+    public Sprite LevelBSprite;
+}