Bug 35919: DB changes

Bug 35919: DB changes

This patch adds:

* A new table: `record_sources`.
* A new user permission: `manage_record_sources`.
* A FK on record_sources.recour_source_id on the biblio_metadata tables

Record sources will contain a name and (for now) a flag telling if
records from the specific source can be manually edited.

Signed-off-by: Tomas Cohen Arazi <tomascohen@theke.io>
Signed-off-by: Matt Blenkinsop <matt.blenkinsop@ptfs-europe.com>
Signed-off-by: Jonathan Druart <jonathan.druart@bugs.koha-community.org>
Signed-off-by: Katrin Fischer <katrin.fischer@bsz-bw.de>