Pull request type

• Code changes (bugfix, features)
• Code maintenance (refactoring, formatting, tests)
• ReadMe, Docs and GitHub updates
• Other (please describe):

Checklist

• Docs have been reviewed and added / updated
• Lint (black rocketpy/ tests/) has passed locally
• CHANGELOG.md has been updated (if relevant)

Current behavior

See #766,
When calling rocket.all_info() on a "surfaceless rocket", it throw an error.

New behavior

Now you will see no more errors when trying to print out information from a rocket without aero surfaces.

Breaking change

• No

Additional information

I tested with the getting started notebook. Everything is looking fine.

Essentially: if you do not define any aerodynamic surface, why in the world would you want to draw the rocket? Sorry but we can't.