Add option to pass SerializationSurrogateProvider

[kemsky]

    protected override XmlObjectSerializer CreateXmlObjectSerializer(Type type)
    {
        var serializerSettings = new DataContractSerializerSettings
        {
            KnownTypes = GetKnownTypes()
        };

        var serializer = new DataContractSerializer(type, serializerSettings);

        serializer.SetSerializationSurrogateProvider(new ExpressionSurrogateProvider());

        return serializer;
    }

ISerializationSurrogateProvider allows to customize serialization and add support for unknown types.

PS. unfortunately, there is a bug in JSON serializer: dotnet/runtime#100553.