Add import/export-dataset features

[tcompa]

Export

Endpoint:

GET /api/v2/project/{project_id}/dataset/{dataset_id}/export/

Response-body model:

Import

Endpoint:

POST /api/v2/project/{project_id}/dataset/import/

Request-body model:

Response-body model: same as the standard POST/GET dataset endpoints.

[tcompa]

Refs:

• add import/export endpoints for dataset fractal-server#1407
• Import/export dataset fractal-server#1402

[zonia3000]

Create dataset modal changes depending on a switch.

Using "Create new":

Using "Import from file":

The name field in this case is optional and it overrides the name during the import.

On the dataset page the export dataset button is located on the top right, as the last button. It uses the same icon of the export workflow button.

[jluethi]

This looks great!