Move examples

[aslakhellesoy]

🤔 What's changed?

The example code has moved to https://github.com/cucumber/screenplay.js.examples

⚡️ What's your motivation?

The example code itself has a lot of dependencies and makes it difficult to upgrade dependencies. Plus, it's quite complicated. We could add back a simpler example in this repo without dependencies on @cucumber/electron, react etc...

This fixes #127

🏷️ What kind of change is this?

• 🏦 Refactoring/debt/DX (improvement to code design, tooling, documentation etc. without changing behaviour)

♻️ Anything particular you want feedback on?

Right now there are no tests (apart from a test for eventually). We should add back some unit tests as well as a simple Cucumber example.

📋 Checklist:

• I agree to respect and uphold the Cucumber Community Code of Conduct
• I've changed the behaviour of the code
  • I have added/updated tests to cover my changes.
• My change requires a change to the documentation.
  • I have updated the documentation accordingly.
• Users should know about my change
  • I have added an entry to the "Unreleased" section of the CHANGELOG, linking to this pull request.

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