feat(dart_package): allow run skipped tests

[alestiago]

Description

As a developer I will sometimes have some tests that I skip locally but run in CI. The Dart CLI exposes a "run-skipped" parameter that allows doing so, however the dart_package doesn't use the parameter, see:

very_good_workflows/.github/workflows/dart_package.yml

Line 103 in 3ab53d9

dart test -j ${{inputs.concurrency}} --coverage=coverage --platform=${{inputs.platform}} && dart pub global run coverage:format_coverage --lcov ${{(inputs.check_ignore && '--check-ignore') || ''}} --in=coverage --out=coverage/lcov.info --packages=.dart_tool/package_config.json --report-on=${{inputs.report_on}}

I would like to have a new parameter "run-skipped" that is set to false by default and can be enabled by the user.

The flutter_package workflow can also benefit of this change.

[kelvinwieth]

Can I work on this?