[Datasets] Add documentation for bulk parquet read API and file metadata providers. (#24354)
[Datasets] Add documentation for bulk parquet read API and file metadata providers. (#24354)

API doc updates for #23179 and #24094. All data docs related to #23179 should be up-to-date once this PR and #24203 are merged.
ray-project/ray,ray-project/ray,ray-project/ray,ray-project/ray,ray-project/ray,ray-project/ray,ray-project/ray,ray-project/ray