Support interval type

[AShiou]

Support Interval type

We do the following things,

1. In ExpressionFormatter.java, format query from format INTERVAL -'5' HOUR to INTERVAL '-5' HOUR
2. In BigQueryRecordIterator.java, convert BigQuery output value format [sign]Y-M [sign]D [sign]H:M:S[.F] to Period
   https://cloud.google.com/bigquery/docs/reference/standard-sql/data-types#interval_type
3. In IntervalType.java, modify type to support pg interval format
4. Add Interval type to pg_type table
5. Convert PostgreSQL = ANY to BigQuery IN, because JDBC will query the following sql when resultSet.getObject()

SELECT
  (n.nspname = ANY (SELECT *
FROM
  UNNEST(pg_catalog.current_schemas__bool____varchar(true))
))
, n.nspname
, t.typname
FROM
  (`canner-cml`.pg_catalog.pg_type t
INNER JOIN `canner-cml`.pg_catalog.pg_namespace n ON (t.typnamespace = n.oid))
WHERE (t.oid = 1186)

6. Modify IntervalType#decodeUTF8Text to support prepared statement

Related Issue

#209

[goldmedal]

LGTM