Adding support for netCDF (*.nc) files
Related to #3113  Conceptually, we can use xarray to load the netCDF file, then xarray -> pandas -> pyarrow. I'd still need to verify that such a conversion would be lossless, especially for multi-dimensional data.
### Feature request

netCDF (*.nc) is a file format for storing multidimensional scientific data, which is used by packages like `xarray` (labelled multi-dimensional arrays in Python). It would be nice to have native support for netCDF in `datasets`.

### Motivation

When uploading *.nc files onto Huggingface Hub through the `datasets` API, I would like to be able to preview the dataset without converting it to another format.

### Your contribution

I can submit a PR, provided I have the time.