feat: permutation

[Satvik-Singh192]

Description

This pull request adds a complete visualization for Permutations (Recursion) under the Recursion category.
It includes:

• src/algorithms/Recursion/permutation.js

  • Fully functional recursive backtracking algorithm
  • Step-by-step tracking of swaps, recursion depth, and backtracking
  • Correct generation of all permutations

• src/components/Recursion/PermutationsVisualizer.jsx

  • Clean UI with Tailwind styling
  • Interactive controls (Play, Pause, Step, Reset, Speed slider)
  • Highlighted array elements during swaps/backtracking
  • Display of all generated permutations
  • Real-time step tracking panel

This feature provides a clear and educational visualization of how permutations are generated using recursion and backtracking.

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Semver Changes

• Minor (new features, no breaking changes)

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Issues

Closes #80 — Permutations Visualization (Recursion)

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Checklist

• I have read the Contributing Guidelines.

[Satvik-Singh192]

@adityacosmos24 please review my pull request sir