docs: Add MLflow integration tutorial and example

[micedre]

Add comprehensive documentation and working example for MLflow integration:

• Tutorial covering experiment tracking, pyfunc model creation, and deployment
• Example scripts with training data and pyfunc wrapper implementation
• Updated README with PyPI installation instructions

[meilame-tayebjee]

Is it normal that neither the uv.lock nor the pyproject.toml has been modified ? mlflow is not is the original dependencies

[micedre]

Is it normal that neither the uv.lock nor the pyproject.toml has been modified ? mlflow is not is the original dependencies

I didn't want to add a dependency not required by the core functionalities (this is only an example). I'll add some notes about that in the docs.