feat: add example for next-i18next

[pixelass]

This Pull request adds an example for i18n support via next-i18next

Basic features are:

• provide a localized app
• handle routing of all locales
• redirect to preferred language
• store user preferred language

[saltyshiomix]

@pixelass

Sorry for late work on this 🙇

I proudly merge this PR :)

[saltyshiomix]

@pixelass

Just released nextron v8.15.0, which includes this PR 🎉

Thank you for your continued support 🙇