Slimbook/hero: Init

[LucasFA]

Description of changes

Create a profile for the Slimbook "HERO" model.

Things done

• Tested the changes in your own NixOS Configuration
• Tested the changes end-to-end by using your fork of nixos-hardware and
  importing it via <nixos-hardware> or Flake input
  I have tested with nix run ./test#run, as well.

Obsolete error:

Please note that I have commented out the imports from `common/cpu/intel` and `common/gpu/intel/coffee-lake`, as they call `common/gpu/intel` and produces the following error during the build:

> sudo nixos-rebuild switch --flake .
building the system configuration...
error:
       … while calling the 'head' builtin
         at /nix/store/wj2qla569hnxwqfc26imv5hqbxc1rc27-source/lib/attrsets.nix:1574:11:
         1573|         || pred here (elemAt values 1) (head values) then
         1574|           head values
             |           ^
         1575|         else

       … while evaluating the attribute 'value'
         at /nix/store/wj2qla569hnxwqfc26imv5hqbxc1rc27-source/lib/modules.nix:816:9:
          815|     in warnDeprecation opt //
          816|       { value = addErrorContext "while evaluating the option `${showOption loc}':" value;
             |         ^
          817|         inherit (res.defsFinal') highestPrio;

       … while evaluating the option `system.build.toplevel':

       … while evaluating definitions from `/nix/store/wj2qla569hnxwqfc26imv5hqbxc1rc27-source/nixos/modules/system/activation/top-level.nix':

       (stack trace truncated; use '--show-trace' to show the full, detailed trace)

       error: The option `hardware.intelgpu.driver' in `/nix/store/6wricnap2cb90nj7kxi7kjxanczqp5ix-source/common/gpu/intel' is already declared in `/nix/store/4b7i72pprx6d2614bfpz4v0dnb12nlhp-source/common/gpu/intel'.

I am still pretty unfamiliar with Nix and NixOS, so I haven't managed to diagnose it yet. I would appreciate any feedback there.
If it is any use, my config is hosted in github.com/LucasFA/.nixos

Edit: I am happy to report that this error was just an error in my config. I have now tested the full version in my system.

Edit 26/12: I have been daily driving this the last few days. Doesn't seem to have any major issues except when a blank screen is triggered from the power settings inactivity period, which I have found no solution to.