Generate nfo files for use with media centers, Kodi/Jellyfin

[belikor]

https://github.com/tuxfoo/lbry-seedit/issues/20

The lbrytools.print_summary function is able to create a CSV file with all claims downloaded so far.

p = print_summary(title=True, typ=False, path=False,
                  cid=True, blobs=True, ch=False, name=True)

It would not be too hard to place this information in an XML format (.nfo) so that it can be read by Kodi and Jellyfin.

When it is cycling through the list, it could write one .nfo per claim.