2014996327 - Added variables to BP action and product block

1. For the action “Add a fictitious product to a business process”, the ability to write a variable in the additional field of the process product has been improved; 2. For the “Products by table” block, the ability to write a value (including variables) to the additional field of the process product has been improved (an additional field and a variable are indicated, and when adding a new line in the table of products of the process interface, the current time should be automatically written to the additional field of the process product)