TA Nested Tensors

TANestedTensors(tensors)	TANestedTensors is a generic class to handle nested tensors.
ImageNestedTensors(tensors)	Implement Image Nested Tensor for PyTorch.
LabelsNestedTensors(tensors)	Implement Labels Nested Tensor for PyTorch.
MaskNestedTensors(tensors)	Implement Masks Nested Tensor for PyTorch.
NestedTensors(tensors)	Implement Nested Tensor for PyTorch.
VideoNestedTensors(tensors)	Implement Video Nested Tensor for PyTorch.