Create a WSL2 distro to simplify buiding on Windows

[ataffanel]

This is an idea from @karlscholz from the updated windows build instruction PR:

One thing I'd like to propose to you is the option of providing a importable WSL2 distro like you provided the VM. Maybe this would make it much easier for new and probably mostly windows users to start working without the need for a powerful computer. My Intel Pentium Surface Go 1st gen is more than enough to run WSL2 really smooth.

This is a good idea that needs to be investigated. Some of the open questions are:

• How do we generate the distro? There seems to be a way to generate distros from a docker image which would be great since we already have a Builder image that we maintain and keep up to date so it would be a perfect base.
• How do we distribute the distro. The simplest seems to be to distribute the .tar(.gz?) archive but there also seems to be a way to make a package. Distributing it in the Windows store would be the best in terms of user experience but feasibility and extra work related should be investigated.