Pierremerriaux/depth nerfacto camera different resolution fix

[pierremerriaux-leddartech]

Hi, when I use camera with different resolutions with depth-nerfacto, it crashs in pixel_samplers.py collate_image_dataset_batch_list when we do key: value[c, y, x] for key, because value is a list. I unroll to a loop over list item and concat every at the end. not sure it is well optimize, but it works, I am able to train.