Bug 31485: Move _item_denied_renewal to Koha::Item

Bug 31485: Move _item_denied_renewal to Koha::Item

The question whether item is denied renewal doesn't depend on
circulation rules or the patron, it is only a property of the item and
only changes to the item's attributes can cause the return value of
the check to change, thus we should move this to be a method of
Koha::Item.

To test:
 1) Run unit tests
    $ prove t/db_dependent/Circulation.t
    $ prove t/db_dependent/Koha/Item.t

Signed-off-by: David Nind <david@davidnind.com>
Signed-off-by: Katrin Fischer <katrin.fischer.83@web.de>
Signed-off-by: Tomas Cohen Arazi <tomascohen@theke.io>