Mercado Pago is the largest online payment platform in Latin America, supports more countries, currencies and payment methods in the region than other PSPs, and is more accessible to small businesses. This commit integrates Odoo with a combination of the Checkout Pro and Checkout API solutions of Mercado Pago to implement payments with redirection to the provider's payment page. Task - 2704764 Part-of: odoo/odoo#83957 Co-authored-by: Antoine Vandevenne (anv) <anv@odoo.com>