Add support for jsonschema export similar to openapi-v3

**Describe the problem/challenge you have**
Most text editors use json schema, to autocomplete and validate YAML files. To make it easier to the users, to write YAML files based on a YTT schema, it would be great to have a way to create the json schema from a YTT file, similar to the openapi schema that is currently implemented.

**Describe the solution you'd like**
Support for json schema as a output option for ` ytt -f schema.yaml --data-values-schema-inspect --output`

**Anything else you would like to add:**
During kubecon 2024, the talk [Developers demand UX for K8s](https://kccnceu2024.sched.com/event/1YeNM/developers-demand-ux-for-k8s-mairin-duffy-red-hat-inc-conor-cowman-atlantic-technological-university?iframe=no) highlighted that YAML validation & auto-completion seems to be one of the main struggles developers face when working with Kubernetes.

Using YTT and it's schemas, could help alleviate that issue.

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