Add methods that allow to insert/fetch a stream of bytes in arbitrary format

See the discussion here: https://github.com/ClickHouse/clickhouse-rs/pull/152#issuecomment-2358965178

For raw insert, the main use case is to insert the data from files. Similarly, with raw query, the data can be saved into a file.

- [x] `Query::fetch_bytes` #182
- [ ] `Insert::write_bytes` or a separate impl, such as `InsertBytes` (#339)
- [ ] Add enums (non-exhaustive) for current ClickHouse formats (or at least the most popular ones); see https://github.com/ClickHouse/clickhouse-rs/pull/244#discussion_r2357811600. Enums should implement Into so it is not a breaking change for the current `Query::fetch_bytes` impl

Start with the linked discussion and the existing Query::fetch_bytes work referenced in the issue. Review the unchecked Insert::write_bytes or InsertBytes option and the proposed enums for ClickHouse formats; done means raw insertion is supported and format values are represented without breaking the current Query::fetch_bytes API.

Written by the indexing model from the issue text.