Plang 2392 cmd error

[godrei]

Checklist

• [x] I've read and followed the Contribution Guidelines
• [x] step.yml and README.md is updated with the changes (if needed)

Version

Requires a MINOR version update

Context

This PR improves on the xcodebuild command execution error messages.

Changes

• Error message reasons are printed with newlines and are indented based on the depth of the reason

step run failed:
  exporting an IPA failed:
    command (xcodebuild "-exportArchive" "-archivePath" "./code-sign-test.xcarchive" "-exportPath" "./exported" "-exportOptionsPlist" "./export_options.plist") failed with exit status 70:
      error: exportArchive: "code-sign-test.app" requires a provisioning profile.
      error: exportArchive: "watchkit-app.app" requires a provisioning profile.
      error: exportArchive: "watchkit-app Extension.appex" requires a provisioning profile.
      error: exportArchive: "share-extension.appex" requires a provisioning profile.

• xcodebuild exit errors now have this format: command (<xcodebuild_command>) failed with exit status <status>: <reasons>
  • reasons are the lines from the xcodebuild output which have the error: prefix
• Higher-level error messages are improved around the archive and IPA export command

Non-functional changes:

• Improved logs around the Step Output Export phase
  • eliminated duplicated logs and removed some unnecessary newlines

Investigation details

Decisions