[FR]: Create reusable workflows

[arriolac]

Is there an existing issue for this?

• I have searched the existing issues

Is this a feature request for one of the samples?

• Yes, this is a specific request related to this samples repo.

Sample app

Other (bug not related to sample app)

Describe the problem

Workflows under .github/workflows contain duplicated configs.

Describe the solution

GitHub provides a way to create a reusable workflow: https://docs.github.com/en/actions/using-workflows/reusing-workflows#creating-a-reusable-workflow

Additional context

See discussion in #814

Code of Conduct

• I agree to follow this project's Code of Conduct

[riggaroo]

Reverting this commit for now - it breaks the build #824 -> doesn't look like we can reuse it in this way.