Change in coreboot[master]: util/liveiso: Add NixOS configs for bootable live systems

[Felix Singer (Code Review)]

Attention is currently required from: Timofey Komarov, Nico Huber, Maciej Pijanowski, Michał Żygowski, Patrick Rudolph, Maxim Polyakov, Paul Menzel, Thomas Heijligen, Edward O'Callaghan, Michael Niewöhner, Krystian Hebel,  Marcello Sylvester Bauer.
Hello Timofey Komarov, build bot (Jenkins), Patrick Georgi, Patrick Rudolph, Paul Menzel, Thomas Heijligen, Michael Niewöhner, Krystian Hebel, Nico Huber, Maciej Pijanowski, Michał Żygowski, Maxim Polyakov, Edward O'Callaghan,  Marcello Sylvester Bauer,

I'd like you to reexamine a change. Please visit

https://review.coreboot.org/c/coreboot/+/50194

to look at the new patch set (#31).

Change subject: util/liveiso: Add NixOS configs for bootable live systems
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util/liveiso: Add NixOS configs for bootable live systems

Add NixOS configurations for bootable live systems containing a set of
tools which might be useful for firmware development in general and for
working on coreboot.

There are two configurations provided. One for console-only and a
graphical one, which is mostly the same as the console image but it
comes with Gnome Shell as window manager and some graphical tools in
addition.

An image can be built using `build-console.sh`, respectively
`build-graphical.sh`. The resulting iso image can be found in
`result/iso/`.

The console image results in ~700MB, while the graphical one results in
~2GB.

Change-Id: Iaf49d198e99781434bd89d2a8a125a4988b77e1c
Signed-off-by: Felix Singer 
---
M MAINTAINERS
A util/liveiso/.gitignore
A util/liveiso/build-console.sh
A util/liveiso/build-graphical.sh
A util/liveiso/common.nix
A util/liveiso/console.nix
A util/liveiso/description.md
A util/liveiso/graphical.nix
8 files changed, 262 insertions(+), 0 deletions(-)

git pull ssh://review.coreboot.org:29418/coreboot refs/changes/94/50194/31