Fix issue #1: Create Github Actions Workflow for dev and main and publish to pypi

[lawwu]

This pull request fixes #1.

The changes fully address all requirements specified in the issue:

1. Branch-specific workflows are correctly implemented:

   • dev.yml handles testing/linting on dev branch
   • release.yml handles publishing on main branch

2. Test and lint requirements are met in dev.yml:

   • Implements pytest with coverage reporting
   • Implements flake8 linting
   • Triggers on both push and PR events to dev branch
   • Tests across multiple Python versions (3.8-3.12)

3. Publishing requirements are met in release.yml:

   • Triggers on push to main branch
   • Builds package using python-build
   • Validates distribution with twine
   • Publishes to PyPI

4. Security requirements are met:

   • Uses GitHub secrets for PyPI authentication (PYPI_API_TOKEN)
   • Properly configures token-based authentication for PyPI

5. Performance optimization is implemented:

   • Both workflows use pip caching via actions/setup-python's cache parameter
   • This will speed up dependency installation across runs

The workflows are properly structured, use modern GitHub Actions features (like v4 of checkout and setup-python), and follow best practices for Python package CI/CD. The implementation is complete and should work as intended once the required secrets are configured.

Automatic fix generated by OpenHands 🙌