BigQuery: Expose num of bytes, num of rows in TableInfo/Table

[chouclee]

Feature request

How can we get the latest number of rows by reloading the table?

   // https://github.com/googleapis/google-cloud-java/blob/master/google-cloud-clients/google-cloud-bigquery/src/main/java/com/google/cloud/bigquery/Table.java#L177
   TableField field1 = TableField.LAST_MODIFIED_TIME;
   TableField field2 = TableField.NUM_ROWS;
   Table latestTable = table.reload(TableOption.fields(field1, field2));

Table/TableInfo hasn't exposed method to get numRows and numBytes
Python library has exposed those fields in
https://github.com/googleapis/google-cloud-python/blob/master/bigquery/google/cloud/bigquery/table.py#L500

[chouclee]

Currently all those info are exposed through StandardTableDefinition.