Add the ability to provide a password to an Excel Output File

[BrentSauerbrei]

For the Output Tool it would be very beneficial to be able to pass a password in order to populate a password protected Excel spreadsheet. It appears there is a decent amount of interest based on the Community feedback pertaining to the subject.

[TheOC]

Sweet idea, this could come in handy. 
As an addition, I'd want this password to be free text or taken from a field so it can be generated within the workflow.