Interop kornia::Tensor with ort::Tensor (including cuda)

[edgarriba]

Integration with CUDA buffers would have to go through a different API, TensorRefMut::from_raw. It just needs a pointer and shape, so Kornia's existing APIs suffice. TensorRefMuts can be used zero-copy in session inputs just like a Value, but since the memory is user-managed, it does have a lifetime bound. See ort's cudarc example: https://github.com/pykeio/ort/blob/60f6ecae9064a75a474678998af42ea87067b1b1/examples/cudarc/src/main.rs#L35-L43

Originally posted by @decahedron1 in #125 (comment)