Add LookupResult::to_record_batch()

[fresh-borzoni]

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• I searched in the issues and found nothing similar.

Description

use the existing RowAppendRecordBatchBuilder, it's needed to provide results in arrow format for DF or other tools

Willingness to contribute

• I'm willing to submit a PR!

[fresh-borzoni]

good first issue

[Prajwal-banakar]

Hi @fresh-borzoni, I'd like to work on this! I just finished the batch timeout configuration and I'm familiar with this. Could you please assign this to me?