title: Add translation on server side only using next-i18next
body: <p><strong>Scenario:</strong></p>
  
  <ul>
  <li>We have a server that responds to several domains (70+)</li>
  <li>Each domain has it own language (already in an individual JSON file)</li>
  <li>I have a map <code>"domain":"translation.json"</code></li>
  <li>Each client has a single language: a user visiting "example.com" will see the website in English only. A visitor in "example.es" will see it in Spanish. There are no options to change language of the current site, just link to another domain.</li>
  </ul>
  
  <p><strong>Problem</strong></p>
  
  <p>I don't want to load 70+ translations in the client side because the client will never be able to change it.</p>
  
  <p>How can I apply that map in my NextJS app but not drop the other resources to client?</p>
  
  <p>PS: there is no tag for "next-i18next" here on SO (and there are 2 for nextjs).</p>