Added missing ToString and DebuggerDisplays

src/Discord.Net.Rest/Entities/Guilds/RestBan.cs

@@ -22,6 +22,7 @@ namespace Discord.Rest
         public override string ToString() => User.ToString();
         private string DebuggerDisplay => $"{User}: {Reason}";
 
+        //IBan
         IUser IBan.User => User;
     }
 }