[IMP] core: new neutralize flag on database restore and database duplicate dialog

Before this PR:
The only way to neutralize the database is running cli command neutralize

After this PR:
There is a new checkbox "neutralize database" in Duplicate database and Restore database dialog that neutralize the database after duplication/restore.
I also moved the neutralization code to the external module so it can be called also outside the cli .

closes odoo/odoo#121569

Signed-off-by: Julien Castiaux (juc) <juc@odoo.com>