H12 v1.0.0

What's Changed

• Add solution by @LukasKlenner in #1
• add private tests by @LukasKlenner in #2

New Contributors

• @LukasKlenner made their first contribution in #1

Full Changelog: https://github.com/FOP-2223/FOP-2223-H12-Root/commits/v1.0.0