(client)feat:实现子弹定义以及生成，实现初始化动画，实现血条 (#43)

Co-authored-by: zzdxxz <2079238449@qq.com>
Co-committed-by: zzdxxz <2079238449@qq.com>

Client/Assets/Scripts/Data/ItemDef.cs

@@ -1,13 +1,23 @@
 namespace Data
 {
+    public enum ItemRarity
+    {
+        Common,
+        Uncommon,
+        Rare,
+        Epic,
+        Legendary
+    }
     public class ItemDef:Define
     {
         public ImageDef texture;
-        public AttributesDef attributes;
+        public ItemRarity rarity = ItemRarity.Common;
+        public int maxStack = 1; // 最大堆叠数量，默认为1
+        public bool ssEquippable = false; // 是否可装备
     }
 
     public class WeaponDef : ItemDef
     {
-        
+        public AttributesDef attributes;
     }
 }