Add csv_reader

[ramanishsingh]

Adding a CSV reader. It uses the built-in csv package to read the csv file line by line. Gives an option to skip-header and also yield items in a header as key based dictionary.

[pytorch-bot[bot]]

:link: Helpful Links

:test_tube: See artifacts and rendered test results at hud.pytorch.org/pr/pytorch/data/1474

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:x: 1 New Failure, 1 Unrelated Failure

As of commit 7572ff57a1f26639351461a8956dcfbda529a63b with merge base 62ec59fa6747183c8cf9bb00febb2fe315019302 ():

NEW FAILURE - The following job has failed:

• Lint / style (gh) Process completed with exit code 1.

BROKEN TRUNK - The following job failed but were present on the merge base:

👉 Rebase onto the `viable/strict` branch to avoid these failures

• Run StatefulDataLoader Tests / test (macos-latest, 3.12) (gh) (trunk failure)

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