(client) feat:实现摄像机跟踪与移动，实现任意位置生成实体，实现更安全的资源加载方式（指定unity内部加载资源） (#42)

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

Client/Assets/Scripts/Data/ResourcesDef.cs

@@ -0,0 +1,20 @@
+using System.Xml.Linq;
+
+namespace Data
+{
+    public class ImageDef : Define
+    {
+        public string name;
+        public string path;
+        public int wCount;
+        public int hCount;
+        public int pixelsPerUnit = 16;
+
+        public override bool Init(XElement xmlDef)
+        {
+            base.Init(xmlDef);
+            name = defName;
+            return false;
+        }
+    }
+}