Match, Highlight, and no Warnings on other Systemd configuration files

[SJrX]

link files, see systemd.link(5)

netdev and network files, see systemd.netdev(5), systemd.network(5)

daemon config files, see systemd-system.conf(5), systemd-user.conf(5), logind.conf(5), journald.conf(5), journal-remote.conf(5), journal-upload.conf(5), systemd-sleep.conf(5), timesyncd.conf(5)

nspawn files, see systemd.nspawn(5)

[SJrX]

See also #90 , but the scope of this is much smaller, just let the files open.