feat/i18n

[vmnog]

• feat(packages): add @nivo/i18n package
• refactor: moves app/app/ under app/[lang]/app/ directory
• feat(settings): add language settings section
• refactor: rename directory from [lang] to [locale]
• feat(settings): using current locale in language settings
• feat(packages): integrate auth with i18n
• feat(settings): user can update preferred language
• feat(dictionary): add dictionary client side provider with jotai