Add https://github.com/alexellis/k3sup

[meysholdt]

requested here: https://twitter.com/alexellisuk/status/1194178370147430400?s=21

[jankeromnes]

Cool project! Here are the standard questions we normally ask maintainers:

Is your project's development setup fully automated? How to use it?

Why is your project interesting/exciting to contribute to?

Does your project have an active community?

Does your project have basic newcomer onboarding docs? (e.g. CONTRIBUTING.md, good-first-issues...)

It would be cool if someone can answer these for k3sup.

[alexellis]

I am the maintainer for k3sup, but didn't request this. These questions are answered in the README.

If someone wants to contribute a gitpod file we'd consider taking a look at it, but we have not had any requests for this from the community.