add windows subsystem for linux artwork

[ghuntley]

[samueldr]

Can we get this done through a Makefile and/or Nix derivation? This adds a lot of churn to the repository.

If this needs to be hosted somewhere on the web, and that's why it's pre-generated, we might rather look into a solution to host it under the nixos.org domain, rather than use a third party (GitHub) to host the tiles.

[ghuntley]

The files are required as part of building the appx on Windows. We (graham and I) haven't identified the best way to automatically build the installer. Maybe we just use a manual github actions job. Let's not get hung up on that though.

WSL Workflow steps:

1. Computer: Continually build x64 and arm tarballs for WSL via hydra (pending)
2. Human: On a windows 10 computer, download these tarballs and these images (alternatively store them in nixos/nixpkgs or whatever you recommend) into a folder in nixpkgs/
3. Human: On a windows 10 computer, compile the wsl installer
4. Human: Release the appx to the windows 10 store (legal agreements already signed w/nixos foundation)

Thoughts:

• These images don't regularly change, no need to automatically generate them.

Questions:

• Store images in S3 bucket?
• Store images here in this repo?
• Store images in nixpkgs itself SxS the installer source code?

[samueldr]

Another option:

• Makefile, upload a tarball of those as a release to the nixos-artwork repo?