Change the download data method for tutorial1

[MauroLeidi]

Description

Currently, the installation of the data for tutorial 1 relies on a shell script:
demo/data_demo/data_8_tutorial_1/downloadData.sh

This approach assumes the user has a Unix/Linux/macOS environment (or something like WSL on Windows). As a result, Windows users without a Unix-like shell cannot easily run this script.

Suggestion

We should provide a more OS-independent way to download the tutorial data, such as:

• A small MATLAB script downloadMatlab.m that works cross-platform.
• Or simply add manual download instructions for windows in the README.md file.

This would ensure that the tutorial runs smoothly on all operating systems.