Reformat Python codes with black and introduce Python linting via GitHub actions

[TaekyungHeo]

Summary

This pull request introduces two major improvements to the codebase:

1. Reformatted Python Codes with Black: Applied black to enhance code readability and consistency.
2. Python Linting GitHub Action: Added a workflow for automated linting to ensure code quality standards.

These changes aim to improve the maintainability and quality of the codebase.

Test Plan

[github-actions[bot]]

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