Every microstore under the same domain will share the same order key

[alexcanessa]

Describe the feature

Since we use the slug as the key to store the order key and all hosted microstore use the same domain, every microstore will use the same order.

mfe-microstore/packages/microstore/src/components/composite/MicrostoreContainer/index.tsx

Line 40 in fb1036e

<OrderStorage persistKey={`cl:${settings.slug}:orderId`}>

There are a few cases where having an independent order makes sense (e.g. different links sent to the same user, a specific product campaign, etc).

It'd be good to have an option in the Link creation to have an independent cart0.