White List - Create custom file type import specifications

[jackchoy]

I often work with files from vendor software packages where the input/output files are actually delimited text files, but where the filetype is a vendor defined filetype (Branding!), rather than .csv or .txt.  I would like to be able to whitelist these file extensions as data files so that they can be dragged into workflows.  I'm able to import them using "All Types" and then manually defining the import specifications, but it would be nice if I could define this on a file type basis rather than on a per file basis.