Add detector_PGD_best.pt: ResNet-34 PGD adversarial detector — detection acc 99.93%

Add detector_BIM_best.pt: ResNet-34 BIM adversarial detector — detection acc 99.57%

Add resnet18_cifar10_best.pt: ResNet-18 CIFAR-10 classifier — val acc 94.68%

Add README

initial commit