Add Debian genericcloud images
Hello,
I don't know if this would require a lot of work but it would be nice that the Debian genericcloud images (from here: https://cdimage.debian.org/cdimage/cloud/) are available in the Osinfo database.
The reason is that my personal infrastructure is too small for use things like OpenStack and too big for manually download images on the website.
Thanks in advance for your work on this library!