Restore license ans developer tags

[jonesbusy]

Restoring such metadata deleted on previous PR

• License block is present on archetype and can be useful to add if not present
• Developer block is not present anymore on archetype and was used long time ago for maintainainer list. This is now replaced by the RPU. I saw many plugin with deprecated list and should bean cleaned on my opinion

Testing done

Automated tests

Submitter checklist

• Make sure you are opening from a topic/feature/bugfix branch (right side) and not your main branch!
• Ensure that the pull request title represents the desired changelog entry
• Please describe what you did
• Link to relevant issues in GitHub or Jira
• Link to relevant pull requests, esp. upstream and downstream changes
• Ensure you have provided tests - that demonstrates feature works or fixes the issue