enable grand create in offeritem

entity/Offeritem_entity/Offeritem_entity.aod

@@ -4,6 +4,7 @@
   <majorModelMode>DISTRIBUTED</majorModelMode>
   <documentation>%aditoprj%/entity/Offeritem_entity/documentation.adoc</documentation>
   <title>Offeritem</title>
+  <grantCreateProcess>%aditoprj%/entity/Offeritem_entity/grantCreateProcess.js</grantCreateProcess>
   <grantUpdateProcess>%aditoprj%/entity/Offeritem_entity/grantUpdateProcess.js</grantUpdateProcess>
   <grantDeleteProcess>%aditoprj%/entity/Offeritem_entity/grantDeleteProcess.js</grantDeleteProcess>
   <afterOperatingState>%aditoprj%/entity/Offeritem_entity/afterOperatingState.js</afterOperatingState>

entity/Offeritem_entity/grantCreateProcess.js

+import("system.vars");
+import("system.result");
+import("Offer_lib");
+
+result.string(OfferUtils.isEditable(vars.get("$param.OfferStatus_param")));
\ No newline at end of file