Support BigQuery type aliases in WriteToBigQuery with Avro format

Support BigQuery type aliases in WriteToBigQuery with avro temp file format. The following aliases are missing:

• STRUCT (==RECORD)
• FLOAT64 (==FLOAT)
• INT64 (==INTEGER)

Reference:
https://cloud.google.com/bigquery/docs/reference/standard-sql/data-types
https://developers.google.com/resources/api-libraries/documentation/bigquery/v2/java/latest/com/google/api/services/bigquery/model/TableFieldSchema.html#setType-java.lang.String-