Extensible select and enumeration types

and their elements in schema State_based_behaviour_representation_mim taking into account BASED_ON types


 characterized_product_definition - EXTENSIBLE SELECT
          product_definition
          product_definition_relationship

 representation_proxy_select - EXTENSIBLE GENERIC_ENTITY SELECT
          action_method
          state_type
          state_type_relationship

 state_type_of_item - EXTENSIBLE GENERIC_ENTITY SELECT