Define a values.schema.json for values.yaml files

[paulfouquet]

Is your feature request related to a problem?
We would like to be able to validate a values.yaml file with helm install, helm upgrade, helm lint, helm template.
That would also enable importing a Helm chart from this repo with cdk8s to generate specific Helm construct to have type hinting.

Is your feature request related to a specific Helm chart, if yes mention name of the chart?
It is related to aws-for-fluent-bit but it would be great to have them for all the charts.

Describe the solution you'd like
The charts should have a values.schema.json JSON schma file.
See https://helm.sh/docs/topics/charts/#schema-files and https://github.com/cdk8s-team/cdk8s/blob/master/docs/cli/import.md#values-schema.

Describe alternatives you've considered
N/A