[jdbc] Make ResultSet to return JDBC compliant types for Date/DateTime columns

[chernser]

Summary

JDBC defines what data types should be returned by default when ResultSet#getObject() is called. Today returned types do not match this schema and it breaks many external integrations.
This PR add conversion in JDBC driver to resolve the issue. It is important to not change java client itself, because it should operate as is and because it may break interfaces.

Closes: #1409

Checklist

Delete items not relevant to your PR:

• Unit and integration tests covering the common scenarios were added
• A human-readable description of the changes was provided to include in CHANGELOG
• For significant changes, documentation in https://github.com/ClickHouse/clickhouse-docs was updated with further explanations or tutorials