[RFC][CARA-1255][CARA-1196] Missing billing history and invalid billing period

Ticket - https://immersivelabs.atlassian.net/browse/CARA-1255
Ticket - https://immersivelabs.atlassian.net/browse/CARA-1196

The log entry would now be created upon creation of the invoice so that it would appear in the billing history

Added proper interval from the order items to the billing request