That would be cool, but no, nothing like that exist. But you could make it yourself.
Alternatively, I created an Acrobat plug-in that copies embedded file bookmarks into the bookmarks on the cover PDF. So at least that puts them in one place, at the top level. But it's not free.
You'll find it Here: pdfscripting.com plug-ins
The source for PDF Scripting Info pdfscripting.com
The Console Window (Video tutorial)
The Console Window(article)
Having trouble, Why Doesn't my Script Work