Databento-dbn

Enhancements
- Added `--omit-header` option to `dbn` CLI to skip encoding the header row when
encoding CSVs
- Added Python setter for `ts_event` on all records
- Upgraded `pyo3` version to 0.22.3
- Added new consolidated publishers for `XNAS.BASIC` and `DBEQ.MAX`

Breaking changes
- Changed handling of `write_header` parameter for `CsvEncoder` and `DynEncoder`. It
now determines whether a header is written automatically in general, not only during
instantiation of the encoder. This makes it possible to use `encode_records` and
`encode_decoded` without writing a header
- `CsvEncoder::new` creates an encoder that will always try to write a header. Use the builder with
`write_header(false)` to create an encoder that won't write a header row
- `schema` is now always optional for the `CsvEncoder` builder and no longer returns a `Result`
- Changed the layout of `CbboMsg` to better match `BboMsg`
- Renamed `Schema::Cbbo` to `Schema::Cmbp1`

Bug fixes
- Removed `debug_assert!` on `rtype` in `RecordRef::get_unchecked` that was too strict.
The method is already marked unsafe and it's okay to interpret one record type as another type
as long as latter type's size is not greater than the former's

Enhancements
- Added `DynAsyncBufWriter` for buffering compressed or uncompressed async output
- Added new publisher values for `XCIS.BBOTRADES` and `XNYS.BBOTRADES`

Bug fixes
- Added missing Python type stub for `pretty_ts_ref` in `StatMsg`

Enhancements
- Added new `SType` variants for reference data: `Isin`, `UsCode`, `BbgCompId`, `BbgCompTicker`, `Figi`, `FigiTicker`
- Added new publisher value for `DBEQ.SUMMARY`

Breaking changes
- Renamed `SType::Nasdaq` variant to `SType::NasdaqSymbol`
- Renamed `SType::Cms` variant to `SType::CmsSymbol`

Bug fixes
- Fixed issue where `AsyncDynReader` would only decode the first frame of multi-frame
Zstandard files

Bug fixes
- Update `rtype_dispatch` and `schema_dispatch` macros for `BboMsg`
- Update `RecordEnum` and `RecordRefEnum` for `BboMsg`

Enhancements
- Added `BboMsg` record struct for future `bbo-1m` and `bbo-1s` schemas
- Upgraded `pyo3` version to 0.22.1
- Upgraded `json-writer` to 0.4

Breaking changes
- Added `Default` trait implementation for `Mbp1Msg` due to it no longer needing
to support multiple `rtype` values. The `default_for_schema` function has been removed
- Changed `Bbo1sMsg` and `Bbo1mMsg` to be aliases for `BboMsg`
- Changed the default value of the `side` fields to `Side::None`
- Reordered parameters and added defaults to Python `Metadata` initializer to match
required arguments in Rust