Successfully implemented attractive scroll bar and changed font family of all website

[srishti023]

🛠️ Fixes Issue

Fixes: #761

👨‍💻 Description

What does this PR do?

This PR enhances the website's user interface by adding an attractive, gradient-styled scrollbar with a glowing effect, as well as applying a gaming-related font family site-wide. These updates improve the visual appeal and theme consistency, providing a more immersive and engaging experience for users.

A custom-styled scrollbar with a blue-to-pink gradient and a glowing effect. A new, gaming-related font family applied across the entire site for a cohesive, themed look.

• Briefly describe the feature or bug fix you've implemented.
• Highlight any major changes or added functionality.
• Mention how it enhances the project.

📄 Type of Change

• [ ] Bug fix (non-breaking change which fixes an issue)
• [X] New feature (non-breaking change which adds functionality)
• [ ] Breaking change (fix or feature that would cause existing functionality to not work as expected)
• [ ] Documentation update (adds or updates related documentation)

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✅ Checklist

• [X] I am a participant of GSSoC-ext.
• [X] I have followed the contribution guidelines of this project.
• [X] I have made this change from my own.
• [ ] I have taken help from some online resources.
• [X] My code follows the style guidelines of this project.
• [X] I have performed a self-review of my own code.
• [ ] I have added documentation to explain my changes.

Mandatory Tasks

• [X] Make sure you have self-reviewed the code. A decent size PR without self-review might be rejected.

🤝 GSSoC Participation

• [X] This PR is submitted under the GSSoC program.
• [X] I have taken prior approval for this feature/fix.

[github-actions[bot]]

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[github-actions[bot]]

🎉🎉 Thank you for your contribution! Your PR #766 has been merged! 🎉🎉