📄 Align the organisation README with the project, before this repo is archived

[janhalen]

🎯 Objective

Make sure that https://github.com/OS2fleetoptimiser is a relevant and up to date after archiving this repo.

The README should:

• Provide an overview of the organization
• Convey the mission, values, and work of the project
• Guide visitors to more detailed information
• Establish a consistent and professional image to attract users and contributors to the project
• Set the tone for the projects commitment to quality, transparency, and collaboration

[janhalen]

This would be a ideal "good first issue" for onboarding the PO with a practical task.

This guide might serve as a entry point: https://www.tukutoi.com/creating-a-stellar-github-readme-for-your-organization/