Create .deb package

**Is your feature request related to a problem? Please describe.**
This is hard to install on Debian and Ubuntu.

**Describe the solution you'd like**
* A `.deb` package provided with each release.

**Additional context**
See also #19 on the need for a [`mkinitramfs` module](http://manpages.ubuntu.com/manpages/bionic/man8/mkinitramfs.8.html)