[iOS] podspec file for Cocoapods release, pod name: LibTorchvision (#4055) (#4074)
[iOS] podspec file for Cocoapods release, pod name: LibTorchvision (#4055) (#4074)

Co-authored-by: Yuchen Huang <bee6ab4c922836f6a558b1e8dbc393b81627d805@fb.com>
Co-authored-by: Francisco Massa <b9d73fbd0dd2b138ef140b2a6d4ef3a23e9e3d1a@gmail.com>
pytorch/vision,pytorch/vision,pytorch/vision,pytorch/vision,pytorch/vision,pytorch/vision