[Feature] Deep deleting core associated files

[Grabou]

Hello and thank you for this great tool! I have been following @RetroDriven since its script on MiSTer and appreciate the quality of its tools.

My request is simple: it would be nice if there was an option to force the deletion of the settings that are lying around in the Assets, Plateforms or even Settings folders when we decide to delete cores.

Thank you for this!

JB