implement communication to frontend when getting a .json file

This merge request belongs to following frontend change: Merge Request for frontend

I implemented a new feature for the SD Creation Wizard:

Up to now each time the user uploads a SHACL Shape, he needed to fill in all the (mandatory) attributes manually.

I implemented a new endpoint which can be queried through the frontend receiving two files: a SHACL Shape as previous and a .json file which shall contain claims conforming to the SHACL Shape. The endpoint then does not only return the processed SHACL Shape, but also the matching attributes, which are present in both, the Claim File and the SHACL Shape.

I also implemented the regarding changes in the frontend in another Merge Request. Unfortunately, as described in the frontend merge request, the pipelines do not complete due to an issue I do not fully understand. @moosmannp can you help here aswell?

Signed-off-by: Justin Dex justin.dex@msg-david.de