Request UI feature to be able to wrap non-JSON data

[micolun]

Is your feature request related to a problem? Please describe.
Currently, when wrapping secret data in Vault UI at "/ui/vault/tools/wrap" you have to provide it in JSON format. JSON format is not user friendly.
This is a challenge for non-technical people from the company, who are not familiar with JSON format (colon, quotes, etc).

Describe the solution you'd like
Allow to wrap single strings in the UI, without json format. If json format is still required, maybe add a default key, like value or secret.

Describe alternatives you've considered
Provide the ability to switch from json format to field entry values. Similar to creating kv secrets in the Web UI.

Explain any additional use-cases
Response wrapping token is a cool Vault feature that can be used to share secrets between users, and avoid chats and emails. Not all the company employees are technical and having the ability to provide data in non-JSON format, would make it easier and more often used.

Additional context
Add any other context or screenshots about the feature request here.