✨ UX: client webui/api to drive automatic deployment

[mudler]

Acceptance criteria

• WebUI sitting on the client (could be a container image, or a single-binary as inside the kairos-cli)
  • Lets pick a flavor, syncining with Kairos releases
  • Configure the node/deployments
  • Generates a YAML (assumes there is a Kairos YAML schema validator)
  • Could even be exposed in public, giving oneliner to perform action locally
• Implies there will be a CLI taking yaml specs (built from the UI) and actually do "operations"
• Deployes via Netboot and/or offers ways to do that manually with ISO, burning USB sticks (TBD)

Notes

• I've started to tackle some of aspects of the third steps. Created https://github.com/spectrocloud-labs/herd to handle the operation execution in a DAG context (as they might depend on multiple steps, as download, verify, etc).
• Alpine.js + tailwindCSS wizard: https://gist.github.com/mudler/3c6ee04747083a598b41684166394e17

Supersedes https://github.com/kairos-io/kairos/issues/200

[jimmykarily]

Step #2 was split here: https://github.com/kairos-io/kairos/issues/778