Add alternate arrow reader

[trueleo]

Fixes #XXXX.

Description

Add a new arrow reader which can read arrow file in reverse. This is to be used while writing to parquet file such that it yields file sorted in timestamp descending.

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This PR has:

• been tested to ensure log ingestion and log query works.
• added comments explaining the "why" and the intent of the code wherever would not be obvious for an unfamiliar reader.
• added documentation for new or modified features or behaviors.