[FIX] website_sale_delivery: Adapt website_sale_delivery module to the new checkout

addons/website_sale/controllers/main.py

addons/website_sale/models/sale_order.py

addons/website_sale/static/src/js/website_sale.js

addons/website_sale/views/templates.xml

addons/website_sale_delivery/controllers/main.py

addons/website_sale_delivery/models/sale_order.py

addons/website_sale_delivery/views/website_sale_delivery.xml