Add simple use-effect-like behavior simulation in Python

[kadambari25]

Describe your change:

• Add an algorithm?
• Fix a bug or typo in an existing algorithm?
• Add or change doctests?
• Documentation change?

This PR adds a simple Python implementation that simulates "useEffect"-like behavior by executing a callback when a dependency changes.

The original issue lacked sufficient context and did not clearly describe a specific bug or feature. To address this, I implemented a small educational example that demonstrates a similar concept in Python.

The implementation includes:

• A function to simulate dependency-based execution
• Type hints for clarity
• Doctests to ensure correctness
• Documentation explaining the concept

Reference:
https://un5qgjbzw9dxcq3ecfxberhh.julianrbryant.com/wiki/Reactive_programming

Checklist:

• I have read CONTRIBUTING.md.
• This pull request is all my own work -- I have not plagiarized.
• I know that pull requests will not be merged if they fail the automated tests.
• This PR only changes one algorithm file.
• All new Python files are placed inside an existing directory.
• All filenames are in all lowercase characters with no spaces or dashes.
• All functions and variable names follow Python naming conventions.
• All function parameters and return values are annotated with Python type hints.
• All functions have doctests that pass the automated testing.
• All new algorithms include at least one URL that points to Wikipedia or another similar explanation.
• Fixes use effect #14299