Add cast by Tree and refactor

RTTI/RTTI_Meta.h

@@ -0,0 +1,17 @@
+#pragma once
+
+// This macro adds meta information to a type.
+#define GENERATE_META(Class) \
+class Class; \
+template<> struct Meta <Class> { \
+static constexpr Classes Type = Classes::##Class; \
+};
+
+// Predeclarate struct for meta information
+template<class T> struct Meta;
+
+//  Enum type classes
+enum class Classes
+{
+    IRTTI
+};