Improve performances on checkout setup and opening

Description

This Feature will improve the way the Checkout is setting up and improve load time. We are going to decide if an order refresh is needed or not, based on a the following parameters:

order's autorefresh attribute
order's guest attribute
kind of token

In particular we can reference this flowchart:

flowchart LR
    A[Start] --> B{order.autorefresh?}
    B -- true --> C{Token type?}
    C -- Sales channel --> G
    C -- Customer token --> D{order.guest?}
    D -- false --> G[No refresh]
    D -- true --> F
    B -- false ----> F[Refresh sync]

commercelayer / mfe-checkout

Improve performances on checkout setup and opening #356

Description