Add top_chrome_extensions.csv and add copy icon in index.html

[Devika0713]

Description

Added a dataset of the top 50 chrome extensions. updated index.html page. Changed the "Copy link" to a copy icon to keep it more minimal and consistent with the download icon.

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)
• [ ] This change requires a documentation update

Checklist:

• [ 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
• [ ] My changes generate no new warnings
• [ ] I have added tests that prove my fix is effective or that my feature works
• [ ] New and existing unit tests pass locally with my changes
• [ ] Any dependent changes have been merged and published in downstream modules

  ATTACH SCREEN-SHOT

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[samz5320]

sry . changing of copy button, cant be don't at the moment. u can add the dataset tho.. pls delete this pr and send a new one.tq

[Devika0713]

Oh okay got it .I'll send another one Thank you