Frontend: Empty state when there is no metadata for the components details

Overview

Create an empty state when no metadata is available for the component details.

Proposal

• Figma

Next steps

1. From what @f_caplette suggested:

If we wanted to differentiate between no metadata, an error fetching and no backfilled, we would need some kind of signal from the API so that we can show different states.

2. We need to add an illustration.
3. We need to add a link to the doc on how to add metadata.