This commit modernizes the project's development infrastructure while maintaining
backward compatibility. Rebased on top of PR1 (netifaces dependency fix).

Key improvements:
- Add PEP 621 [project] section to pyproject.toml for dual Poetry/standard packaging support
- Enhance CI/CD workflow with improved Python 3.10-3.13 testing matrix and caching
- Make tests optional in CI when tests directory doesn't exist (tests added in future PR)
- Add comprehensive development tooling: pytest-asyncio, pytest-cov, mypy, pylint-protobuf
- Improve pylint configuration with protobuf support and netifaces C extension handling
- Add pytest configuration with asyncio mode and coverage reporting
- Update Makefile with coverage reporting and enhanced pylint integration
- Fix code quality issues: specific exception handling and black formatting
- Update poetry.lock to include all dependencies (netifaces + new dev tools)

All quality checks pass with 10.00/10 pylint score and proper black formatting.

🤖 Generated with [Claude Code](https://claude.ai/code)

Co-Authored-By: Claude <noreply@anthropic.com>