Use a message based PrettyFormatter

[mpkorstanje]

🤔 What's changed?

Refactor PrettyFormatter to use messages.

⚡️ What's your motivation?

Partially implement: https://github.com/cucumber/cucumber-jvm/issues/3001

🏷️ What kind of change is this?

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

📋 Checklist:

• [ ] https://github.com/cucumber/pretty-formatter/pull/1
  • [ ] https://github.com/cucumber/query/pull/77
• [x] 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.