Add MecadoPago Support

We would greatly appreciate the integration of MercadoPago into the checkout, as it would significantly improve the payment experience for users in Latin America. MercadoPago is widely used and trusted in countries such as Argentina, Brazil, Mexico, Chile, Colombia, Peru, and Uruguay, among others, and supports multiple local payment methods including credit/debit cards, bank transfers, and cash-based options depending on the country.

Adding MercadoPago would increase accessibility, reduce friction during checkout, and help reach a broader audience across these regions.