Step 1743 - Update Expo deploy workflow

[godrei]

Context

Building an Expo-based React Native project has changed a lot since we last time updated the default workflows:
Expo eject is not needed for building the project, running builds on Expo Application Services (EAS) is the recommended way.

Other than that, we apply general improvements to the default workflows:

• Add Activate SSH key (RSA private key) only if needed
• Remove the dummy Script Step
• Improve the workflow descriptions

Changes

• Expo scanner: use the new Run Expo Application Services (EAS) build Step in the deploy workflow.
• Expo scanner: update Expo workflow descriptions.
• Expo scanner: update Expo project detection logic.

Non-functional changes:

• Move Expo related Steps' Input configuration to the steps package, so that it is the steps package responsibility to know what input key configures the given input.

YarnStepListItem(inputs ...envmanModels.EnvironmentItemModel) -> YarnStepListItem(command, workdir string)

• Created a getTestSteps function to unify the way we add test steps to automatic and manual configs.

Investigation details

I used the Expo docs for reference.

Decisions

[lpusok]

@godrei Is EAS working for bare Expo workflows also?

[godrei]

@lpusok yes, you can find it in the Expo docs: https://docs.expo.dev/bare/exploring-bare-workflow/#releasing-to-the-apple-app-store-and
also, you can find a working sample in our Expo account.