Add live build artifacts example

[MikeMcC399]

What would you like?

Add a live example demonstrating how to store app build artifacts between jobs.

Why is this needed?

• The Cypress documentation page Continuous Integration > GitHub Actions recommends saving build artifacts between an install job and a worker job, using the GitHub actions actions/upload-artifact and actions/download-artifact.

• This repo contains no corresponding internal example that can be forked and run.

• The linked examples in the README > More examples section demonstrating use of artifacts are not under control of Cypress.io and can't be harmonized to other documentation:

  • https://github.com/bahmutov/cypress-examples
  • https://github.com/bahmutov/cypress-gh-action-split-jobs

Other

The links to the external examples would then no longer be necessary.

[MikeMcC399]

• PR test: add example-build-artifacts workflow #1456 adds a live example