Update all exercises to follow PR #97 best practice structure #98
Description
Following PR #97, which refactored an exercise to follow best practices, update all remaining exercises in the repository to adopt the same structure.
- Review the changes made in PR Update storing-artifacts.md #97 for reference on the best practice structure.
- Apply similar refactoring and structure improvements to all other exercises in the repository.
- Ensure consistency and clarity across all exercises.