moved parameter_binder from member to parameter to bind, execute and fetch methods

include/matador/sql/object_parameter_binder.hpp

@@ -9,8 +9,6 @@
 #include "matador/utils/foreign_attributes.hpp"
 #include "matador/utils/primary_key_attribute.hpp"
 
-#include <string>
-
 namespace matador::sql {
 
 namespace detail {
@@ -61,8 +59,7 @@ private:
 
 }
 
-class object_parameter_binder
-{
+class object_parameter_binder {
 public:
   template<class Type>
   void bind(Type &obj, utils::attribute_writer &binder) {