feat: added scroll up button

[Sushil010]

Fixes: #1789

Description

A scolll up button is added to bottom of page that will be helpful for interactivity with user.

Type of PR

• Bug fix
• [X ] Feature enhancement
• Documentation update
• Other (specify): _______________

After adding scroll up button

Checklist:

• [ X] I have made this change from my own.
• [ X] My code follows the style guidelines of this project.
• [ X] I have performed a self-review of my own code.
• [ X] I have commented my code, particularly in hard-to-understand areas.
• [ X] I have made corresponding changes to the documentation.
• [ X] My changes generate no new warnings.
• [X ] I have tested the changes thoroughly before submitting this pull request.
• [ X] I have provided relevant issue numbers and screenshots after making the changes.

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[github-actions]

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[PriyaGhosal]

Please see the conflicts .