ARROW-14741: [C++] Add support for RecordBatchReader in CSV writer

[ahadnagy]

No description provided.

[github-actions]

https://issues.apache.org/jira/browse/ARROW-14741

[lidavidm]

Thanks, this looks good to me.

@thisisnic just to confirm, is this the function you were looking to use from the R side?

[thisisnic]

Thanks, this looks good to me.

@thisisnic just to confirm, is this the function you were looking to use from the R side?

Yeah, I think this is what we were after. Thanks!

[ursabot]

Benchmark runs are scheduled for baseline = d3bf0f6 and contender = afa5d95. afa5d95 is a master commit associated with this PR. Results will be available as each benchmark for each run completes.
Conbench compare runs links:
[Finished ⬇️0.0% ⬆️0.0%] ec2-t3-xlarge-us-east-2
[Failed ⬇️0.0% ⬆️0.0%] ursa-i9-9960x
[Finished ⬇️0.09% ⬆️0.04%] ursa-thinkcentre-m75q
Supported benchmarks:
ec2-t3-xlarge-us-east-2: Supported benchmark langs: Python. Runs only benchmarks with cloud = True
ursa-i9-9960x: Supported benchmark langs: Python, R, JavaScript
ursa-thinkcentre-m75q: Supported benchmark langs: C++, Java