[style]: Change the theme clerk sign in and sign up form

[amanjaiswal7236]

What's the style idea?

To achieve a similar dark-themed look for your clerk sign-in and sign-up forms as shown in the provided screenshot.

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• [X] I have checked the existing issues
• [X] I have read the Contributing Guidelines
• [X] I agree to follow this project's Code of Conduct
• [X] I want to work on this issue

[github-actions[bot]]

Thank you for opening an issue! We will look into it ASAP. star the repo if you like it.

[raghav1482]

Go ahead