Harmonize repo structure

[jh-RLI]

Summary of the discussion

Describe the findings of the discussion in the issue or meeting.

Type of change (CHANGELOG.md)

Added

• Add a new functionality (#)

Updated

• Update existing functionality (#)

Removed

• Remove a broken link (#)

Workflow checklist

Automation

Closes #

PR-Assignee

• [ ] 🐙 Follow the workflow in CONTRIBUTING.md
• [ ] 📝 Update the CHANGELOG.md
• [ ] 📙 Update the documentation on mkdocs

Reviewer

• [ ] 🐙 Follow the Reviewer Guidelines
• [ ] 🐙 Provided feedback and show sufficient appreciation for the work done