migration: Books data migration from invenio v1

[david-caro]

Scripts to migrate books data from invenio 1 system to the new format.

[egabancho]

I think the migration of book it's already covered, at least for Invenio, by invenio-migrator After all books are records.

Maybe we should close this issue and open a new one on CDS overlay to migrate CDS books into CDSLabs, WDYT?

[david-caro]

If the books don't need anything specific from the circulation module it's ok, though I'd create a new issue here in order to actually check it and test it (or reuse this one).