[Suggestion] Introduce linter, integrate as GitHub Actions.

[Shion1305]

Dear GHunt Team,

Thank you for developing and maintaining GHunt. I want to express my appreciation for your great contribution to the OSINT community. It's an honor to be part of such an impactful project.

I've observed that our codebase could benefit from more consistent formatting.
I propose integrating a Python linter, such as Pylint, flake8 or black as GitHub Actions worklows.
This would not only improve code readability but also lead to a better development experience for all contributors.

Looking forward to your thoughts on this suggestion.

Best Regards,
Shion