There are some users requesting this feature (to upload your ebook to the library without needing to use complex commands or scripts), but the maintainers looked a bit arrogant (imo) saying that if you want that, just use SFTP or something like that and that they won't do and that the users should accept and not complain, as they don't have time (and desire) to implement that.
Relatively easy for me (with IT background) but certainly difficult for general public.