[IMP] payment_ogone: add possibility to use sha256

SHA1 is going to be deprecated by ogone.
This change try to keep current behaviour while adding
the possibility to use SHA256 and SHA512

As this change as to be done in stable version,
We use the length of the key to know which version of SHA
we should use.

The goal is to switch add an selection to master to ensure
better code modularity.

The change was requested by PDE/ANV.

opw-2766648

closes odoo/odoo#86652

X-original-commit: 759411fa
Signed-off-by: Nicolas Lempereur (nle) <nle@odoo.com>
Signed-off-by: Damhaut Florian (flda) <flda@odoo.com>