PARQUET-2195: Add scan command to parquet-cli

[wgtmac]

This PR enhances parquet-cli by adding a scan command to go through all records without printing them. This is useful when users need to verify if the parquet file is corrupted.

Added ScanCommandTest to make sure no error happens. Test it manually with local parquet files.

[wgtmac]

@shangxinli Please take a look when you have time. Thanks!

[shangxinli]

lgtm