ci: Add CI/CD pipeline for Python project

[SoClosee]

This PR adds a CI/CD pipeline using GitHub Actions for a Python project. The pipeline includes:

• Build and Test: Runs tests for multiple Python versions (3.8, 3.9, 3.10) in parallel.
• Linting: Checks code quality using flake8.
• Deployment: Builds and publishes the package to PyPI when changes are pushed to the main branch.

This setup ensures that the project is tested across multiple Python versions, linted for quality, and automatically deployed upon successful CI checks.

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