feat(image): list all

[hown3d]

Description

The IaaS API contains a parameter that allows to list all images instead of only the ones in your project.
Add a --all flag that allows to use that parameter.
Additionally print scope and owner of images, which is relevant when listing all images to not wonder where the extra images come from.

Checklist

• Issue was linked above
• Code format was applied: make fmt
• Examples were added / adjusted (see e.g. here)
• Docs are up-to-date: make generate-docs (will be checked by CI)
• Unit tests got implemented or updated
• Unit tests are passing: make test (will be checked by CI)
• No linter issues: make lint (will be checked by CI)