Choose currency when installing Commerce Kickstart

Problem/Motivation

Drupal Commerce requires currency context. We already have config action in place for importing currency specified by the user. This action is currently never used in our contrib core but we are actively looking at how the process of entering custom currency should work.

There are several things to consider here:
- The Recipe Installer Kit doesn't allow for collecting input for recipes ✨ The installer should collect input for recipes that need it Active
- the recipe input should likely be collected in the context of commerce_recipe_core as that's where default (USD) currency is currently installed
- the default store, also part of commerce_recipe_core, should follow the same currency - this makes the (default) content depend on the config input - there is no easy nor supported way of handling this atm
- the commerce_kickstart_demo content should follow selected currency, most likely some currency conversion should take place so that prices look realistic

Steps to reproduce

Proposed resolution

Remaining tasks

User interface changes

API changes

Data model changes