Added Comment fields and changed the signature of the AddOrderExternalData method

In API V7Preview7, a field has been added to the order Comment, the method is used to change the value IEditSession.ChangeOrderComment.

Method signature changed AddOrderExternalData — flag added isPublic.

Data recorded using the AddOrderExternalData method with the isPublic flag set to true will become available in iikoRMS for uploading to the OLAP sales report. If, when calling the AddOrderExternalData method, you pass the isPublic flag equal to false, then such data, as before, is saved only in Syrve POS and will not be accessible externally.