Function run_compaction 

pub async fn run_compaction(
    table: DeltaTable,
    target_file_size: u64,
    z_order_columns: &[String],
) -> Result<(DeltaTable, CompactionResult), ConnectorError>

Runs an OPTIMIZE compaction on a Delta Lake table.

Compacts small Parquet files into larger ones (target size), optionally applying Z-ORDER clustering.

Errors

Returns ConnectorError::Internal if the operation fails.