Prevent large .ipynb files from being committed

[Casperento]

Currently, .ipynb files can be committed to the repository, leading to large file sizes, unnecessary diffs, and potential merge conflicts. To keep the repository clean, we need a solution that prevents accidental commits of .ipynb files. However, simply adding them to .gitignore is not an option, as contributors need to test the scripts locally—especially since report generation provides a reproducible way to present our research results.

Expected Outcome
A cleaner repository that avoids unnecessary large .ipynb files while still allowing contributors to work with Jupyter notebooks locally for testing and report generation.