Add pre_remove hook to fix attributes for data files.
This is dirty, but it is how nordvpn does upstream too.
Adjust PKGBUILD as there is now only 1 systemd service again.
Do not ship with the SysV files as arch is a systemd distro.
Add dependency on iproute2 as it was added upstream
Remove fix for systemd service file paths as upstream places them correctly
now
Nordvpnd has been split into two services
Print message after install informing users about what services to start