Expose HTTP response message (or response metadata) for ClickHouseRawResult #198
Description
Use case
When using ClickHouseRawResult.cs to consume raw query results, applications may need access to HTTP response metadata returned by ClickHouse. Example: X-ClickHouse-Exception-Tag; Content-Encoding (if AutomaticDecompression is set to None); X-ClickHouse-Summary; X-Clickhouse-Timezone; X-Clickhouse-Format
Describe the solution you'd like
The easy solution: Make 'private readonly HttpResponseMessage response' public,
or provide some other means of exposing the message headers like List<KeyValuePair<string,string>> ResponseHeaders.
Other Considerations
Do something similar in ClickHouseDataReader.cs