Implementing the SimpleAutoEncoder JupyterNotebook and class to training.wrapper

[CheickIsmaelD]

Implementations

1: Added the SimpleAutoEncoder.ipynb file providing a detailed explanation on the functionality and usage of the SimpleAutoEncoder class.
2: Added a _simply.py file into the src/pyearthtools/training folder. This folder contains the standalone SimpleAutoEncoder script
3: Altered the init.py file to import the SimpleAutoEncoder class.

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Docstrings

• Docstrings complete and follow Napoleon (google) style

Test Coverage

• [X ] All new code is covered by unit tests
  Two data pipelines were used to determine whether or not the SimpleAutoencoder class was functioning. Would benefit from more test coverage.

Documentation

• Documentation is updated as required

Final Checks:

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• [X ] Described the scope of that use

Claude Sonnet 5 was used to transform the SimpleAutoEncoder Jupyter notebook into a proper Python script, generate the plotting function included in the notebook, check grammar and improve the flow of the notebook's descriptions, and improve abstraction by extracting a run_epoch method to support the fit function (previously, run_epoch's functionality was embedded directly in fit).

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