feat(python) add arguments on read_csv to use all pyarrow options

[igmriegel]

This pull request gives full access to the pyarrow reading options, my team came across the necessity of parsing floats with comma as decimal separator wich is something we can't do on Polars right now, but pyarrow can and it also provides some other details for parsing, reading and converting.

The PR I'm referencing bellow raises an issue about comma as decimal separator wich can be solved with the alterations on my PR.
#6698

This is my first contribution, if it doesn't meet our standards, I will gladly rework on it.

[alexander-beedie]

Thanks for the PR ;) However, this isn't really the right way to go; ideally the polars-native Rust parser would be enhanced to handle both "," and "." decimals - if you want to use additional pyarrow features to create an Arrow from CSV (for now) then you can already do that by using pyarrow directly and passing the resulting table into polars at essentially zero cost.

I think I can see where the polars-native parser would need to be extended, and it doesn't look like a large job. Might take me a few days to get to it though, as I'm having a ridiculously busy week at work...

[igmriegel]

@alexander-beedie
Thanks for the attention, I agree that it is better to have the features natively
I hope I can make some useful work in the near future 😃
I'm closing this PR.

Have a nice week