[client-v2] JSON Support

### Description
Client should support JSON Data type (https://clickhouse.com/docs/en/integrations/data-formats/json/overview).

**Considerations:**
- Client should provide convenient API to get access to row data
- Client should have examples of using a few commonly used JSON parsing libraries
- Client should not implement own JSON parser in any way
- Client documentation should list all details of work with JSON format

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See also:
- https://github.com/ClickHouse/ClickHouse/pull/70288
- https://github.com/Avogar/ClickHouse/blob/master/src/DataTypes/Serializations/SerializationObject.cpp