Restructure project with modular package skeleton

[NuwanJ]

Summary

• add packaging via pyproject.toml and MIT license
• create robot package with placeholders for motion, sensors, communication, helpers and indicators
• set up CI workflow and an example pytest

Testing

• flake8 src tests
• PYTHONPATH=src pytest -q

---

https://chatgpt.com/codex/tasks/task_e_68afef3b0094832690d13467a8a243d4

[github-advanced-security]

This pull request sets up GitHub code scanning for this repository. Once the scans have completed and the checks have passed, the analysis results for this pull request branch will appear on this overview. Once you merge this pull request, the 'Security' tab will show more code scanning analysis results (for example, for the default branch). Depending on your configuration and choice of analysis tool, future pull requests will be annotated with code scanning analysis results. For more information about GitHub code scanning, check out the documentation.