update version in package

adjust spacings for better aesthetics on mobile

`next-intl` localization (once-ui-system#1)

* move components into src/components

* setup next-intl, [locale] dir, adapt routing, support localized mdx

* localize content.js

* fix root layout metadata and sitemap

* revamp content handling, localePrefix as needed

* Move i18n settings to config file

* Remove premade content and config template files

* remove tags and variables from subline string

* add favicon and minor code refacts

* remove unused code

* add translation for buttons

* conditionally render language selector in header

* update readme

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Co-authored-by: Zsofia <[email protected]>
Co-authored-by: Lorant <[email protected]>