Storing workflow artifacts

[tuanthyme]

Is your feature request related to a problem? Please describe.
Feature to allow storage of workflow artifacts. Here are the ones of interest:

1. Code coverage artifacts
2. failures directories from golden tests

Describe the solution you'd like
Add an optional parameter that when true, will run an extra step to upload artifacts using https://docs..com/en/actions/using-workflows/storing-workflow-data-as-artifacts#uploading-build-and-test-artifacts.

Optional would be to allow client to specify a list of names and paths.

Describe alternatives you've considered
For golden failures, I am currently running an extra job if the very_good action fails, which runs flutter test and uploads the artifacts. This extra run is blind to why the very_good action fails, so it could be a wasteful run.

Additional context
Add any other context or screenshots about the feature request here.

[renancaraujo]

May be related VeryGoodOpenSource/very_good_workflows#42

[joelbrostrom]

I would also like this feature.
Now I had to copy paste the workflow implementation and manually add codecov upload in the end as a last step as suggested by @ Azeem over at Stack Overflow

[alestiago]

@joelbrostrom would you be interested in working on a Pull Request? 🙌

[joelbrostrom]

Sorry, I don't have the time or knowledge.