Too much configs and args make debugging harder. The class networkd will
be used to add config files to the networkd runtime dir after formatting
the file with str.format().
They won't work yet but when they do we can use the classes in iwd.py
instead of using dasbus directly. Also added a Name to Match in
systemd-networkd/06-eth.network
The README is now in order, with a few readability
fixes. The renaming of files in systemd-networkd/ is
only for readability. I don't know if networkd
considers the order of files important.