I wanted to link to my Fuzzy Clock
project in GNOME Software. But I couldn't find any direct way to do that, the
solution I found was to do it via the a appstream schema. I don't
really like these custom schemas, but in this case I can accept it.
appstream://fuzzy-clock_keepawayfromfire.co.uk
Note: some characters need to be replaced with "_" like "@".