More weights for 3rd party ViT / ViT-CNN hybrids that needed remapping / re-hosting

EfficientFormer

Rehosted and remaped checkpoints from https://github.com/snap-research/EfficientFormer (originals in Google Drive)

GCViT

Heavily remaped from originals at https://github.com/NVlabs/GCVit due to from-scratch re-write of model code

NOTE: these checkpoints have a non-commercial CC-BY-NC-SA-4.0 license.