Support special icons or emojis when exporting from Workfront

[#1]

Description -  Increase list of icons and emojis that export into Excel

Why is this feature important to you - We support marketing teams that use custom icons and emojis in subject lines of emails and other creative assets. Those must be exported to Excel so that another team can upload to additional systems. Currently, the custom emoji (lightbulb in this case) does not export out.

How would you like the feature to work - Just additions to the current set of icons

Current Behaviour - Currently, there are a few set of icons within the Workfront software that will export into Excel.