docs(internationalization): create documentation for Internationalization

[ossdhaval]

General Guidelines

• Start by covering the general definition of the feature in a few lines and then point to the appropriate section of the SPEC. Please refrain from repeating what is there in the SPEC already.
• Try to make the content Janssen Server specific ( e.g. what are the related Janssen Server properties or feature flags, how to change relevant settings using TUI/command line (use the screenshots), recommendations around recommended values, use-cases)
• Follow the documentation contribution guidelines.
• Feel free to refer to content available in Gluu documentation (or any other IDP) if the content doesn't need to be customized for Janssen Server

Document Location

https://docs.jans.io/head/admin/auth-server/international/

Suggested sections

• Web Pages
• Client Configuration
• Scope Descriptions

[ossdhaval]

Hi @nynymike I suggest consolidating the internationalization section with sub-documents becoming sub-sections in one document. Please share your views.