Bug 34828: Add Koha::Biblio::Metadata::Extractor::MARC

Bug 34828: Add Koha::Biblio::Metadata::Extractor::MARC

and inherit from it

The new usage is now:

1. With a Koha::Biblio object
my $extractor = Koha::Biblio::Metadata::Extractor->new({biblio => $biblio});
$extractor->get_normalized_upc;

or

2. With a MARC::Record
my $extractor = Koha::Biblio::Metadata::Extractor->new({metadata=> $biblio->metadata->record});
$extractor->get_normalized_upc;

Note that there are "Inconsistent hierarchy during C3 merge of class"
warnings raised by the QA script. We could remove them by replacing the
'use' by 'require' in Koha::Biblio::Metadata::Extractor::MARC (in ->new)
but that's suboptimal.

Signed-off-by: David Nind <david@davidnind.com>
Signed-off-by: Tomas Cohen Arazi <tomascohen@theke.io>