Add support for display names from ICU4X

[mosuem]

Missing some features, see #792.

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[github-actions]

PR Health

Breaking changes ✔️

Details

Package	Change	Current Version	New Version	Needed Version	Looking good?
intl4x	None	0.8.2-wip	0.8.2-wip	0.8.2-wip	✔️

Changelog Entry ✔️

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Package	Changed Files

Changes to files need to be accounted for in their respective changelogs.

Coverage ⚠️

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File	Coverage
pkgs/intl4x/build.dart	💔 Not covered
pkgs/intl4x/lib/src/display_names/display_names_4x.dart	💚 50 %
pkgs/intl4x/lib/src/display_names/display_names_impl.dart	💚 100 %
pkgs/intl4x/lib/src/display_names/display_names_stub_4x.dart	💔 0 % ⬇️ NaN %

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// Copyright (c) 2024, the Dart project authors. Please see the AUTHORS file
// for details. All rights reserved. Use of this source code is governed by a
// BSD-style license that can be found in the LICENSE file.

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Package publish validation ✔️

Details

Package	Version	Status
package:intl	0.20.0-wip	WIP (no publish necessary)
package:intl4x	0.8.2-wip	WIP (no publish necessary)
package:intl_translation	0.20.0-wip	WIP (no publish necessary)
package:messages	0.2.0	already published at pub.dev
package:messages_builder	0.2.1	already published at pub.dev
package:messages_serializer	0.2.1	already published at pub.dev
package:messages_shrinker	0.2.2-wip	WIP (no publish necessary)

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[robertbastian]

Note that the displaynames component is experimental, so there might be breaking changes in the future.