title: external dependencies need an extension?
body: <p>It's not clear for me if I'd like to add some jars to my projects should I make an extension for each one ?<br />
  Just read <a href="https://itnext.io/should-you-switch-to-quarkus-4b89eedfe5fe" rel="nofollow noreferrer">https://itnext.io/should-you-switch-to-quarkus-4b89eedfe5fe</a> and it says gson is slower cause there's no extension and I guess maybe it was not compiled to native as it uses reflection</p>