Add DfcProvider::Address

Add our own address to include `region`, currently not supported
by the DFC connector.
`region` is already included in the next branch of data-model-uml:
729eba31a5
To me removed once the DFC connector is updated

engines/dfc_provider/lib/dfc_provider.rb

@@ -8,6 +8,7 @@ require "dfc_provider/engine"
 
 # Custom data types
 require "dfc_provider/supplied_product"
+require "dfc_provider/address"
 
 module DfcProvider
   DataFoodConsortium::Connector::Importer.register_type(SuppliedProduct)

engines/dfc_provider/lib/dfc_provider/address.rb

@@ -0,0 +1,17 @@
+# frozen_string_literal: true
+
+# Temporary solution to add `region` to Address, to be removed once the DFC connector supports it
+
+module DfcProvider
+  class Address < DataFoodConsortium::Connector::Address
+    # @return [String]
+    attr_accessor :region
+
+    def initialize(semantic_id, region: "", **properties)
+      super(semantic_id, **properties)
+      @region = region
+
+      registerSemanticProperty("dfc-b:region", &method("region")).valueSetter = method("region=")
+    end
+  end
+end