CDB3-1920 Add validation for publishing procedure with required documents
Actual results
Required documents - illustration
Expected results
Required documents - illustration and technicalSpecifications
according to https://gitlab.prozorro.sale/public-projects/documentations/-/blob/master/brokers_requirements/alienation/alienation-english-brokersRequirements.md
@Vasyl.Skab
https://prozorrosale.slack.com/archives/CDU5FNAN8/p1634914080010500