Expand the name types in Local Extra

Would it be possible to expand the list of Extra_Type to include more than the current "-behindthescenes", "-deleted", "-interview", "-sample", "-scene" and "-trailer"?

 

I have extras that does not really match these words. Maybe an option to just use the word "-extra" for everything that does not fit anywhere?

Early 2021 clean-up: implemented (-other suffix or Other extra folder)