Feature Request: Save Plots

[jetlime]

Plotting functions shall offer the possibility to save the obtained figure (e.g for plot_feature_impact & plot_mean_feature_impact ).

This can either be done by including an additional argument or by letting these plotting functions return a matplotlib object ( such that the python script using xplique can call matplotlib proper methods such as savefig()).

[AntoninPoche]

Dear @jetlime, thank you for pointing this out. I think this is indeed a relevant feature to add. We will take that into account in upcoming versions.

Best regards, Antonin