In this commit, we take the opportunity to replace the previous unsecure
API with the new FlexCheckout API that implements payment methods
validation in a hosted page. Payment processing is still done with the
DirectLink API.
This commit also renames the module `payment_ingenico` to
`payment_ogone` as well as the referring strings ("Ogone" instead
of "Ingenico", ...).
A dedicated [MOV] commit is not used because neither the [MOV] commit
nor the adapted [REF] would be valid on its own.
See the merge commit for more details.
task-2333029
task-2313907
task-2334015
Co-authored-by: Antoine Vandevenne <anv@odoo.com>
