Add a trait(?) to enable default REST DSL endpoint

[hguerrero]

When writing a simple service there should be an option to have a default mapping to http://localhost:8080/ GET service without the need to add the mapping and code in an integration code and just execute a direct: route.

[github-actions]

This issue has been automatically marked as stale due to 90 days of inactivity.
It will be closed if no further activity occurs within 15 days.
If you think that’s incorrect or the issue should never stale, please simply write any comment.
Thanks for your contributions!