[native_assets_cli] Add HookInput.outputFile

[dcharkes]

Pass in a path to where the output.json should be written.

This enables the output file to not be written into the output directory but next to it. This is cleaner.

I don't remember where we discussed this, but some references to adding the output json can be found in the discussions here:

• [native_assets_cli] Move BuildConfig.targetOS to BuildConfig.codeConfig.targetOS, remove it entirely or extend to cover web #1738

[github-actions]

PR Health

Breaking changes ✔️

Package	Change	Current Version	New Version	Needed Version	Looking good?

Changelog Entry ✔️

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

API leaks ✔️

The following packages contain symbols visible in the public API, but not exported by the library. Export these symbols or remove them from your publicly visible API.

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License Headers ✔️

// Copyright (c) 2025, 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.

Files
no missing headers

All source files should start with a license header.

Unrelated files missing license headers

Files
pkgs/jni/lib/src/third_party/generated_bindings.dart
pkgs/objective_c/lib/src/ns_input_stream.dart

[coveralls]

coverage: 87.738% (+0.01%) from 87.728%
when pulling dd2dc72 on output-file
into a7fb6ee on main.

[mosuem]

Add a @Deprecated?

[mosuem]

Or at least a todo if you want to avoid the analysis errors

[auto-submit]

auto label is removed for dart-lang/native/1882, due to - The status or check suite dart-sdk-clang (ubuntu, stable, native_toolchain_c) has failed. Please fix the issues identified (or deflake) before re-applying this label.