[ADD] when we write 'canceled_in_backend' in a sales order, try to automatically cancel it
[ADD] when we write 'canceled_in_backend' in a sales order, try to automatically cancel it

yvaucher/connector-ecommerce,factorlibre/connector-ecommerce,Antiun/connector-ecommerce,brain-tec/connector-ecommerce,Endika/connector-ecommerce