v0.6.0 Rootless

This release (re)introduces rootless mode where Ayup can be run as a normal user. It also starts up Buildkit for you and no longer uses Containerd. This gets us closer to having a single all-in-one exe that has everything bundled and you can just run it on any Linux machine with a reasonably recent kernel.

There is no longer a pause when exporting large containers because we don't do an export, we run the app inside Buildkit similar to if it was another build step, but not quite. For more discussion on this see https://github.com/premAI-io/Ayup/discussions/28

What's Changed

• Try to fix ver check by @richiejp in #21
• Only use rootless buildkit to run containers by @richiejp in #26

Full Changelog: v0.5.0...v0.6.0