Between the 'loading' and 'done' states of the deposits, we should add a state meaning that the deposited data is being tested.
This would be done by requesting a cooking to the vault, and checking the swh-id of the result archive of the cooking is the same as the input archive.

This would provide a full check of the ingestion, guaranteeing that the input was properly saved.

Additionally, this will add the artifact to cache of the vault, allowing faster retrieval later.