Date picker: allow multiple date selections

[StefanoDiLegami]

Summary

Currently, it is not possible to select multiple dates with the Polaris date picker.
Unfortunately, this means that I have to use another library to achieve this.
Would be great if we could add this feature into the Polaris date picker.

Here is what I do with react-datepicker, but can't do with Shopify Polaris:

Rationale

No response