GUI to generate Cluster object

[jschoone]

/kind feature

Describe the solution you'd like
As an SCS Consumer, I want to be able to generate a Cluster object via a web frontend.
In the first version, the GUI should have input fields to use the variables from the ClusterClass which are defined in the specific Cluster Stack.
The GUI should then create the Cluster object as YAML which can then be deployed into a cluster.

Anything else you would like to add:
Maybe this is helpful: https://cyclops-ui.com

Environment:

• Kubernetes version: (use kubectl version)
• OS (e.g. from /etc/os-release):

[paulphys]

I've been cooking up a small proof of concept, which is now available here.
Let me know what you think. Any type of feedback/critique is much appreciated