Restructured the entire project directory, making `plankapy` pip-installable, enhancing its modularity and maintainability. This involved moving and renaming Python source files and tests into a dedicated `src/plankapy` structure, introducing a `pyproject.toml` for modern packaging standards, and removing obsolete `setup.py` and `__init__.py` files. Updated CI/CD pipelines to accommodate the new structure, ensuring continued automation efficiency. Added a `test_config.py` for centralized test configuration, improving test reliability and ease of modification.
- Migrated project documentation and workflow under new `.forgejo` directory for consistency with Forgejo platform requirements.
- Enhanced Docker containerization in CI builds by specifying a node-based container, streamlining the environment setup process.
- Expanded `.gitignore` to include `venv/`, promoting local development best practices.
- Introduced a comprehensive README update, clarifying the project's forked nature and pip-installation goal, fostering better community understanding and contribution suitability.
