Bug 29144: Add $contents->find_best_match, $library->opac_info

Bug 29144: Add $contents->find_best_match, $library->opac_info

Test plan:
Run t/db_dependent/Koha/AdditionalContents.t
Run t/db_dependent/Koha/Library.t

Note: You may need to set ListOwnershipUponPatronDeletion to
delete to fix a pending issue in patron->delete with lists.

Signed-off-by: Marcel de Rooy <m.de.rooy@rijksmuseum.nl>
Signed-off-by: Owen Leonard <oleonard@myacpl.org>
Signed-off-by: Martin Renvoize <martin.renvoize@ptfs-europe.com>
Signed-off-by: Tomas Cohen Arazi <tomascohen@theke.io>