(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/BuildingDef.cs

@@ -1,7 +1,7 @@
 namespace Data
 {
-    public class BuildingDef:PawnDef
+    public class BuildingDef : EntityDef
     {
-        public bool IsBlocked = true;
+        public float slowDown = 0f;
     }
 }