Add Interactive Column Sorting to Leaderboards

[Anchalgarg03]

Currently, leaderboard data can be searched and filtered, but users cannot sort entries by clicking on column headers.

Proposed Changes:

• Enable sorting on leaderboard columns.
• Support ascending and descending order.
• Add visual indicators (↑/↓) for active sorting.
• Ensure compatibility with existing filters and search.

Benefits:

• Improves data exploration and usability.
• Helps users analyze rankings more efficiently.

I would like to work on this enhancement under GSSoC.

[github-actions]

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[Anchalgarg03]

Hi Maintainers, I would like to work on this issue under GSSoC. Kindly assign it to me.