Bug 32280: Export method ImportBreedingAuth from C4::Breeding

Bug 32280: Export method ImportBreedingAuth from C4::Breeding

In C4::Breeding method ImportBreedingAuth() should be exported to be used for example by plugins.

No test plan needed i bet.

Signed-off-by: Magnus Enger <magnus@libriotech.no>
Looks like a harmless and useful enhancement.
Signed-off-by: Tomas Cohen Arazi <tomascohen@theke.io>
(cherry picked from commit 97a100d19ded4c1297b44c65587b419ca8710cfc)
Signed-off-by: Jacob O'Mara <jacobomara901@gmail.com>
(cherry picked from commit e28fd04eff488349b17ad178b43fce1457b4ab08)
Signed-off-by: Lucas Gass <lucas@bywatersolutions.com>