Bug 33837: Replace days_inclusive by min_days

Bug 33837: Replace days_inclusive by min_days

Instead of passing days and days_inclusive, this patch adds
min_days as replacement. Since days_inclusive is not widely
used, this can be done easily. It removes the confusion
whether days_inclusive impacted other parameters or not.

Test plan:
Run t/db_dependent/Koha/Objects.t
Run t/db_dependent/Koha/Old/Checkouts.t
Run t/db_dependent/Koha/Patrons.t (verifying the change in the
Koha::Patrons module for filtering by expiration date).

Signed-off-by: Marcel de Rooy <m.de.rooy@rijksmuseum.nl>
Signed-off-by: Jonathan Druart <jonathan.druart@bugs.koha-community.org>
Signed-off-by: Tomas Cohen Arazi <tomascohen@theke.io>