[VL] refactor CSV feature to use Velox CSV reader

### Description

Initially Gluten is using Arrow CSV reader to implement the CSV reading feature. Velox now has its own CSV reader ready. We may probably switch to use Velox CSV reader
https://github.com/facebookincubator/velox/pull/13741

### Gluten version

None

Start by tracing Gluten’s CSV reading path and compare its current Arrow-based implementation with Velox pull request 13741. Confirm how the available Velox CSV reader can replace the existing reader; done means the CSV reading feature uses Velox instead of Arrow without changing its expected behavior.

Written by the indexing model from the issue text.