Handling Duplicate Filenames when Unpacking Resources

When unpacking resources into local directories, textures saved there do not have the numbered suffix (.001) present, which means that in cases where textures have the same filename but different in-app names, like Body_BaseColour.png and Body_BaseColour.png.001, the files conflict and only one of the textures is actually saved, causing missing textures. Finding a format that could preserve the incremented filenames would save time tracking through the Blender File renaming textures.