Add technical identifier / name for fields
Is your feature request related to a problem? Please describe. When retrieving a forms submission through the API, to further process the submission data an external application needs to "understand" the responses to map individual attributes to its own data model. E.g. I need to know which field is "street" and which is "city".
Describe the solution you'd like Nextcloud forms could distinguish between a display name of a field and an optional technical name / identifier, that is not just an integer but some meaningful value. The technical name should be part of the data that is provided via the RESTful API.
Describe alternatives you've considered Alternatives would be to just rely on the display name, but that would make an integration very fragile - display names may change and might not be suited to serve as a base for such mapping.
Additional context No additional logic needs to be applied, an additional attribute at the field level would be sufficient.