Keywords should be available to add on the Workfront side when pushing docs to the DAM

[#1]

Right now if a user pushes a document to the DAM from Workfront the metadata fields carry over, but there isn't an option to add keywords. This means the user has to send the doc to the DAM and then go to the DAM and add keywords to ensure accurate search results. This should be available to add in the Workfront side so that users don't have to switch over to the DAM.