feat: update index.server.ts with locale and currency configs

[letelete]

With this PR, internationalization (locale, currency) is supported with chained methods of the SDK in the setup methods of the VSF API-Client.

Related PR in SDK that adds chaining functionality spree/spree-api-v2-js-sdk#344

Description

Related Issue

Motivation and Context

How Has This Been Tested?

Screenshots (if appropriate):

Types of changes

• Bug fix (non-breaking change which fixes an issue)
• New feature (non-breaking change which adds functionality)
• Breaking change (fix or feature that would cause existing functionality to change)

Checklist:

• My code follows the code style of this project.
• My change requires a change to the documentation.
• I have updated the documentation accordingly.
• I have read the CONTRIBUTING document.
• I have added tests to cover my changes.
• All new and existing tests passed.