Add R as a How to use from the Polars (R) Library as an option

### Feature request

The boiler plate code to access a dataset via the hugging face file system is very useful. Please addd

## Add Polars (R) option
The equivailent code works, because the [Polars-R](https://github.com/pola-rs/r-polars) wrapper has hugging faces funcitonaliy as well.

```r
library(polars)

df <- pl$read_parquet("hf://datasets/SALURBAL/core__admin_cube_public/core__admin_cube_public.parquet")
```

## Polars (python) option

## Libraries Currently


### Motivation

There are many data/analysis/research/statistics teams (particularly in academia and pharma) that use R as the default language. R has great integration with most of the newer data techs (arrow, parquet, polars) and having this included could really help in bringing this community into the hugging faces ecosystem.

**This is a small/low-hanging-fruit front end change but would make a big impact expanding the community**

### Your contribution

I am not sure which repositroy this should be in, but I have experience in R, Python and JS and happy to submit a PR in the appropriate repository.