title: Flutter - How to generate very short unique id?
body: <p>I want to generate very short unique iD in my apps for sharing stuff between users and i don't want theses codes to be too long or too complicated.</p>
  <p>I found shortid 0.1.1 (<a href="https://pub.dev/packages/shortid" rel="noreferrer">https://pub.dev/packages/shortid</a>) but it seems to be deprecate and not maintained.</p>
  <p>Also found shortuuid that can do the trick but a bit long (<a href="https://pub.dev/packages/shortuuid" rel="noreferrer">https://pub.dev/packages/shortuuid</a>) i will take this option if no one can find a better one.</p>
  <p>Looking for something like this</p>
  <pre><code>print(shortid.generate());
  // PPBqWA9
  </code></pre>
  <p>EDIT :
  This is what i need : <a href="https://pub.dev/packages/nanoid" rel="noreferrer">https://pub.dev/packages/nanoid</a></p>