Update workflow quickstarts

[marcduiker]

Description

This PR updates the Workflow Quickstarts across all languages since they all had a different implementation (# of activities and logic) and different activity names.

Issue reference

We strive to have all PRs being opened based on an issue, where the problem or feature have been discussed prior to implementation.

Please reference the issue this PR will close: #1162

Checklist

Please make sure you've completed the relevant tasks for this PR, out of the following list:

• The quickstart code compiles correctly
• You've tested new builds of the quickstart if you changed quickstart code
• You've updated the quickstart's README if necessary
• If you have changed the steps for a quickstart be sure that you have updated the automated validation accordingly. All of our quickstarts have annotations that allow them to be executed automatically as code. For more information see mechanical-markdown. For user guide with examples see Examples.

[alicejgibbons]

Thanks Marc!! And look at those tests passing 🎉 just want to confirm that all the logic is still there to run an external event workflow in each example event if the quickstarts dont run it for the tests.

[alicejgibbons]

Thanks Marc!