Added some helper methods in `Enumeration` to work with scoped enumerations.

src/AST/Enumeration.cs

@@ -72,11 +72,15 @@ namespace CppSharp.AST
             return this;
         }
 
-        public bool IsFlags
+        public Enumeration SetScoped()
         {
-            get { return Modifiers.HasFlag(EnumModifiers.Flags); }
+            Modifiers |= EnumModifiers.Scoped;
+            return this;
         }
 
+        public bool IsFlags => Modifiers.HasFlag(EnumModifiers.Flags);
+        public bool IsScoped => Modifiers.HasFlag(EnumModifiers.Scoped);
+
         public Type Type { get; set; }
         public BuiltinType BuiltinType { get; set; }
         public EnumModifiers Modifiers { get; set; }