Schema/web-form for input data in container executor

[gberche-orange]

Is your feature request related to a problem? Please describe.

As a test kube user
In order to productively create a new Test that expects well defined input content (e.g. optional flags in https://github.com/cloudfoundry/cf-acceptance-tests/#optional-parameters )
I need completion/inline documentation/input validation

Describe the solution you'd like

A way to specify a json schema for an executor input parameter, which translates into a web form

There are opensource projects that support web forms UI generation from json schema, see https://json-schema.org/implementations.html#web-ui-generation

Describe alternatives you've considered

For each Executor CR , TestKube generates and provision a CRD with a nested json schema. Then, tk web ui or off-the-sheld K8S UI can be used to create a new Test and be prompted for required input value.

Additional context

This is a bit similar to argo workflow parameters which are described with name/default value/enum and generate a webform
https://argoproj.github.io/argo-workflows/workflow-templates/#ui