Change "create dataset" button

[sofyalaski]

Expected Behaviour

Given the current form:

1. Users see the entries from the dataset schema that are common across raw/derived dataset and we enforce users to provide the mandatory fields. ( here user specifies if it's a raw or derived)
2. Check differences in API V3 and V4 in the DTOs of raw and derived datasets, add compatibility when necessary. Additional fields appear in the questionnaire if any those are needed for any dataset type.
3. Ask user if they want to provide the schema for the scientific metadata. Must be a reachable URL.
4. Form expands with the schema fields.
5. Upon save a POST request is sent to the backend
6. Message "Dataset creation successful/failed" and redirect to it

Current Behaviour

Details

There are similar forms in development by Martin on Published Data and from David on OpenEM Ingestor. We should reuse the technology (jsonforms) and agree on the same style