When a new FANTOIR file has been imported to a new table,
declare in the configuration the new table to use.

For convenience, a fantoir view is also provided, as an alias
to the promoted table.

When other tables will need a foreign key to the fantoir table,
this command will also be responsible to update them.

This strategy allows to transparently update the datasource
while allowing consumers still to use it pending update.

Ref T1750.

• run fantoir-datasource promote fantoir_202210
• check view fantoir and table fantoir_config are created
• run it again to check idempotency