changed the interface of on_primary_key to have a third parameter of type primary_key_attribute

source/core/CMakeLists.txt

@@ -57,6 +57,7 @@ add_library(matador-core STATIC
   ../../include/matador/utils/os.hpp
   ../../include/matador/utils/placeholder.hpp
   ../../include/matador/utils/primary_key_attribute.hpp
+  ../../include/matador/utils/primary_key_generator_type.hpp
   ../../include/matador/utils/result.hpp
   ../../include/matador/utils/singleton.hpp
   ../../include/matador/utils/string.hpp
@@ -79,7 +80,6 @@ add_library(matador-core STATIC
   object/foreign_node_completer.cpp
   object/internal/shadow_schema.cpp
   object/object_definition.cpp
-  object/primary_key_resolver.cpp
   object/relation_endpoint.cpp
   object/schema.cpp
   object/schema_node.cpp