added ObjectRelation.h

inc/hgl/type/object/ObjectRelation.h

@@ -0,0 +1,18 @@
+
+#pragma once
+
+#include<hgl/type/object/ObjectBaseInfo.h>
+#include<hgl/type/SortedSet.h>
+#include<tsl/robin_set.h>
+
+namespace hgl
+{
+    /**
+    * 对象引用关系
+    */
+    struct ObjectRelation
+    {
+        tsl::robin_set<ObjectSimpleInfo> follow_me;            ///<引用自己的对象
+        tsl::robin_set<ObjectSimpleInfo> me_follow;            ///<自己引用的对象
+    };//struct ObjectRelation
+}//namespace hgl