[Feeature] Display Gaia-X Service Provider Names in GUI

[kaimeinke]

Motivation / Problem

Currently the 3Box Profile OR the ETH address is used in the asset preview, catalogue and "all assets" overview. This is confusing and of little use for users.

Solution

If information about the service provider is available through a self-descriptions it should be fetched and used. The corresponding field would be gx-participant:legalName from the participant self-description that is linked through gx-service-offering:providedBy in the service offering.

If no name can be retrieved we fall back to the ETH address. The 3Box integration should be removed anyway, but that would be another story.

Alternatives

A local storage in a DB where users can directly provide their participant SD to the portal and get it checked for compliance. However, this would not be a good solution in the long run.

Acceptance Criteria

• If a participant SD can be retrieved it will be displayed
• The loading does not wait for all SDs, they will be updated after the SDs have been retrieved

Additional context

The following GUI parts are affected:

1. Frontpage Asset Previews

2. "All Assets" Previews

3. Catalogue Previews

4. Asset Detail View