[MCC-1476025] - Add Publish Function

[slingampalli-mdsol]

[MCC-1476025] - Add Publish Function

Changes

• Added publish feature
  • Introduces publish() on DataConnectClient / DataConnectService / DefaultDataConnectService, and publish_dataset() on the Transport interface.
  • Implements Arrow Flight transport support for publish, including schema normalization and two-phase metadata parsing (JSON + optional IPC invalid-records table).
  • Adds PublishResponse (transport) and PublishResult (domain) models and mapping via publish_response_to_domain, with new unit tests.

[Copilot]

Pull request overview

Adds a new “live publish” capability to the DataConnect Python SDK, wiring a publish operation end-to-end (client → service → transport) and introducing corresponding transport/domain response models plus comprehensive unit tests.

Changes:

• Introduces publish() on DataConnectClient / DataConnectService / DefaultDataConnectService, and publish_dataset() on the Transport interface.
• Implements Arrow Flight transport support for publish, including schema normalization and two-phase metadata parsing (JSON + optional IPC invalid-records table).
• Adds PublishResponse (transport) and PublishResult (domain) models and mapping via publish_response_to_domain, with new unit tests.

Reviewed changes

Copilot reviewed 12 out of 12 changed files in this pull request and generated 4 comments.

Show a summary per file

File	Description
tests/test_publish.py	New test suite covering publish mapper/service/transport/client delegation.
tests/test_dry_publish.py	Updates dry-publish tests to satisfy the expanded Transport ABC (adds publish_dataset).
dataconnect/transport/models.py	Adds PublishResponse DTO and expands docs around publish request/response models.
dataconnect/transport/base.py	Extends the Transport ABC with publish_dataset().
dataconnect/transport/arrow_flight/transport.py	Implements publish_dataset() using Arrow Flight do_put and parses publish metadata.
dataconnect/transport/init.py	Re-exports PublishResponse.
dataconnect/service/mappers.py	Adds publish_response_to_domain() mapper.
dataconnect/service/default.py	Implements DefaultDataConnectService.publish() building PublishRequest and translating errors.
dataconnect/service/base.py	Extends DataConnectService interface with publish().
dataconnect/models.py	Adds PublishResult domain model.
dataconnect/client.py	Adds DataConnectClient.publish() plus expanded docstrings.
dataconnect/init.py	Exports PublishResult from the package root.

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