Ajoute des commandes pour lister et supprimer les tables des anciens jeux de données
Fixes https://datahub.incubateur.tech/infrastructure/meta/-/issues/116
### List and manage database tables
To list all existing database tables:
insitu tables
To list orphaned database tables (the associated dataset definition has now been removed):
insitu tables --list-orphans
To delete orphaned database tables (the associated dataset definition has now been removed):
insitu tables --delete-orphans
Edited by Ronan Amicel