Feature Request: Add ability for read-only Checkbox and Radio Items

[waza-ari]

Today, it's possible to set text fields to be read only. This allows a workflow where a document is prepared for signature using the API, and the user ultimately just reviewes the values and then signs the document.

It's currtently not possible to achieve the same with Checkboxes or Radio buttons. As a workaround they can be moved to a different party with auto completion enabled, but it would be nicer to have the ability to set them to read only.

[omohokcoj]

@waza-ari it's possible to mark fields as readonly when pre-filling them via API https://www.docuseal.com/docs/api#create-a-submission.submitters.fields.readonly