Pre-calculation Checks and Embedding Exports

[yunusstalha]

I implemented a safeguard in the calculation method to ensure that PCA and k-means clustering calculations are only performed if images have been successfully read into the system. I added the ability to export image embeddings to a specified directory as a ".npy" file through the export_embeddings method.

[cobanov]

Thank you for your support, I wonder if you think raising an error message instead of a print would be a better option?

 if not value:
        raise ValueError("Value must be a positive integer")

[yunusstalha]

Thank you for your support; I wonder if you think raising an error message instead of a print would be a better option?

 if not value:
        raise ValueError("Value must be a positive integer")

I've switched to raising errors instead of just warnings to clearly indicate that certain actions are not permitted, ensuring users are immediately aware of the issue.

[cobanov]

Perfect.