Fetch all the contributors and added a scroll bar for the div

[avogadroB]

Description

1. Fetch all the contributors
2. constrict the contributor-grid div to show a few contributors at a time
3. add a scroll bar to go through them all

Recording.2024-10-24.203442.mp4

Fixes #1541

Type of change

• Improved the UI on the index page

Checklist:

• My code follows the style guidelines of this project
• I have performed a self-review of my own code
• I have commented my code, particularly in hard-to-understand areas
• I have made corresponding changes to the documentation
• My changes generate no new warnings

Please assign me this PR and add the relevant tags 😄

[github-actions]

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