feat: added fibonacci sequence visualizer

[ADARSHsri2004]

Description

This pull request adds an implementation of the Fibonacci sequence using Dynamic Programming (DP).

The implementation includes:

• Top-Down (Memoization): A recursive approach that caches intermediate results to avoid redundant calculations.
• Bottom-Up (Tabulation): An iterative approach that builds the solution from the base cases up to the desired number.

Both approaches include:

• Clear, well-commented code
• Handling of base cases (n = 0 and n = 1)
• Example outputs
• Brief complexity analysis

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Semver Changes

• Patch (bug fix, no new features)
• Minor (new features, no breaking changes)
• Major (breaking changes)

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Issues

Closes: #17

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Checklist

• I have read the Contributing Guidelines