Add missing `Hash` output format to `ClickHouseFormat` enum (JDBC/DataGrip throws "No enum constant ... Hash")

Use case

Running a SELECT ... FORMAT Hash query through the JDBC driver (e.g. from DataGrip) fails with:

No enum constant com.clickhouse.data.ClickHouseFormat.Hash

The Hash output format (https://clickhouse.com/docs/interfaces/formats/Hash) is supported by the ClickHouse server but is not present in theClickHouseFormat enum, so the driver throws before the query is ever sent.

从 clickhouse-data/src/main/java/com/clickhouse/data/ClickHouseFormat.java 开始，检查输出格式是如何表示和解析的。使用 SELECT ... FORMAT Hash 查询复现 JDBC/DataGrip 失败，然后验证 Hash 在没有 No enum constant 错误的情况下能够被识别，并且查询可以发送到 ClickHouse。