refactor: 🏗️ Separate notebooks into folder

IA_Training/README.md

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+# IA Training XOR
+[![Binder](https://mybinder.org/badge_logo.svg)](https://mybinder.org/v2/git/http%3A%2F%2Fgitea.louisgallet.fr%2FCours-particulier%2FNotebooks/master?urlpath=%2Fdoc%2Ftree%2FNotebook_IA_Training.ipynb)
+
+This is a simple XOR neural network training script.

README.md

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+# Notebooks
+This repository contains Jupyter notebooks for various projects and experiments. Each notebook is organized into a separate directory, with a README file explaining the purpose and content of each notebook.