Added language detection using path parameters

[OutOfBoundCats]

As per my understanding of this article https://developers.google.com/search/docs/specialty/international/localized-versions Google recommends having lang as part of url. This aids in good seo. So i added language detection using path parameters as option to the repository.

[sergiodxa]

Thanks for the PR.

If you want to detect it from the param you can use Remix params object directly instead of using the language detection features of remix-i18next:

// app/routes/($lng)._index.tsx
export async function loader({ request, params }: LoaderFunctionArgs) {
  let lng = params.lng ?? fallbackLanguage;
  let t = await i18n.getFixedT(lng);
  // use t here
}

This is the recommended way since Remix already gives you a way to deal with params in the URL.