Create violin plot of mixed normal distributions with data points using Jupyter Notebook.

[github-actions]

^{This message was generated by git-bob (version: 0.10.0, model: gpt-4o-2024-08-06, log), an experimental AI-based assistant. It can make mistakes and has limitations. Check its messages carefully.}

The changes involved creating a Jupyter Notebook named violin_plot.ipynb that generates two 1D datasets composed of three mixed normal distributions using numpy. It further utilizes seaborn to create a violin plot showcasing these datasets and matplotlib to display and save the plot. The notebook provides a detailed step-by-step guide, from generating the data to visualizing it through a violin plot.

closes #26