(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/Program.cs

@@ -7,6 +7,7 @@ public class Program : MonoBehaviour
     {
         UnityLogger.Init();
         Managers.DefineManager.Instance.Init();
+        Managers.PackagesImageManager.Instance.Init();
     }
 
     private void Start()