[Usecase] Discard systemd related files when installing Arch packages on Artix Linux

1. Install `nullfsvfs-dkms` from the AUR, if it fails to compile you may need to compile it yourself.
2. In `/etc/mkinitcpio.conf`, add in the modules `MODULES(nullfs)`
3. In /etc/fstab add these lines
```
none /etc/systemd nullfs defaults 0 0
none /usr/lib/systemd nullfs defaults 0 0
```
4. Any packages that try to put systemd related files on your system will put them in the void!