[Feat] Scroll To Top functionality

[tanishirai]

Description

The website currently lacks a "Scroll to Top" feature, which can make navigation challenging for users scrolling through long pages.

Proposed Solution:

Introduce a "Scroll to Top" button that becomes visible when users scroll down the page. The button will provide smooth scrolling functionality to take users back to the top of the page seamlessly.

Screenshots

No response

Checklist

• I have checked the existing issues
• I have read the Contributing Guidelines
• I'm a SWoC'25 contributor
• I am willing to work on this issue (optional)

[github-actions]

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