pkg/jsonmessage: stop printing deprecated progressDetail, errorDetail, remove DisplayJSONMessagesToStream and Stream interface

[thaJeztah]

• relates to Refactor stream #2945
• relates to Do not require login unless 401 is received on push #1298

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depends on these fixes to be released in docker-py;

• integration/commit: Don't check for deprecated fields docker/docker-py#3203
• integration: adjust tests for omitted "OnBuild" docker/docker-py#3336
• tests/exec: expect 127 exit code for missing executable docker/docker-py#3290
• Set a dummy-version if none set, and remove unused APT_MIRROR build-arg docker/docker-py#3267
• image load: don't depend on deprecated JSONMessage.error field docker/docker-py#3307

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pkg/jsonmessage: stop printing deprecated progressDetail, errorDetail

The API still returns it for backward-compatibility (but probably
shouldn't), but we should no longer print it. This removes the
use of these fields for printing, but keeps them for streamformatter
to use.

• ErrorMessage was deprecated in 3043c26
• ProgressMessage was deprecated in 597e0e6

client/pkg/jsonmessage: remove DisplayJSONMessagesToStream

It was an adaptor around DisplayJSONMessagesStream for CLI-specific
primitives that was used in the CLI, but can be implemented by users
of this package.

client/pkg/jsonmessage: remove Stream interface

It was an interface to match CLI-specific primitives and is no
longer used.

- What I did

- How I did it

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- Description for the changelog

`client/pkg/jsonmessage`: remove deprecated `ProgressMessage`, `ErrorMessage`, `DisplayJSONMessagesToStream` and `Stream` interface

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[thaJeztah]

docker-py error could be legit, which means it's depending on the deprecated fields;

=================================== FAILURES ===================================
_____________________ ImageCollectionTest.test_load_error ______________________
tests/integration/models_images_test.py:96: in test_load_error
    with pytest.raises(docker.errors.ImageLoadError):
E   Failed: DID NOT RAISE <class 'docker.errors.ImageLoadError'>
------- generated xml file: /src/bundles/test-docker-py/junit-report.xml -------

[thaJeztah]

I have some other changes in a local branch, but need to give those some thinking to see if we can still provide aliases with those. Effectively, I want to un-export most bits, and swap out the DisplayJSONMessagesStream for an iterator / walker that can be used to render JSONMessages. It would be similar to how the auxCallback functions are used; if none is provided, we can provide the default (which is the current way things are rendered), but users can pass their own callback(s) (possibly multiple to allow writing to multiple outputs, although that could be handled internally in their render function / callback.