When the payment views were updated with commit odoo/odoo@f7b8f075, a hook was improperly renamed to `code`, which doesn't help to figure out its purpose. This commit renames it to `provider_credentials` which better fits its role. While doing so, the view files are also renamed and/or split by model to increase their readability. closes odoo/odoo#102976 X-original-commit: 49d126d4fce18761d0261adac00e115b840b9b47 Related: odoo/enterprise#32662 Signed-off-by: Antoine Vandevenne (anv) <anv@odoo.com>