Extended product service orders with linked reservation id.

[prazi]

Summary

Follow style guide

Style guide

Check during review

• The changelog and potentially a deprecation entries are in place.
  • The changelog timestamp is date of merge to develop.
• JSON example extended.
  • New properties are added to the correct place in the JSON.
• New properties in the table are added to the correct place.
• Correct formatting:
  • Spacing is consistent between titles, sections, tables, ...
  • Correct JSON format - indentation.
• DateTime properties should always be defined in ISO format.

[prazi]

@MikeAdamsMews could you please check this one? 🙏🏼