package:native_assets_cli v0.9.0

• Add BuildConfig and LinkConfig outputDirectoryShared.
• Remove package:native_assets_cli/locking.dart with runUnderDirectoryLock.
  Hook writers should not use this, the native_assets_builder does this.
• Fix example packages with RecordUse annotations
  #1586.
• Remove v1.0 / v1.1 related serialization
• Update SDK constraint to 3.5.0+
• Remove (deprecated) support for accepting yaml as config
• Remove usage of package:cli_config and package:args: it minimizes
  dependencies and it simplifies logic any hook has to do (as it no longer has
  to look into environment variables, arguments and json file, determine which
  has presence over other, etc)
• Use DART_HOOK_TESTING prefix for environment variables used for testing on
  Dart CI
• No longer try to resolve uris encoded in config.json against any base uri.
  The hook/{build,link}.dart invoker has to ensure the uris it encodes can be
  opened as-is (i.e. without resolving against any base uri)
• Breaking change Moved some methods to be extension methods.
• Some classes in the BuildConfig and BuildOutput now expose fromJson and
  toJson.
• Breaking change Removed Asset class, removed {Build,Link}Output.assets*.
  Hook writers should now use e.g. output.dataAssets.add(DataAsset(...))
  instead of output.addAsset(DataAsset(...)).
• Breaking change Introduce builder classes that construct hook configs and
  hook outputs.