Added
- Added functional metrics rmse, mse, irmse, mae, imar, sq_rel_error, abs_rel_error, silog
- Added ApplyToFeatures, AddFeatures transforms
- Added `torch_kitti` script to download and scaffold datasets
- Added KittiDepthPreictionDataset to load/scaffold Depth Prediction Dataset
- Added KittiDepthCompletionDataset to load/scaffold Depth Completion Dataset
- Added KittiRawDataset to load sync+rect data