chore: prepare release workflow (#5)

* chore: add package metadata and finish release workflow

- Update version from 0.0.1 to 0.1.0 for initial public release
- Add project URLs (Repository, Documentation, Changelog) to
pyproject.toml
- Implement dynamic version reading via importlib.metadata in
__init__.py
- Export __version__ in public API for programmatic access

* chore: prepare release workflow with CONTRIBUTING guide, architecture updates, and Makefile fixes