feat: Improve Orchestration Sample Code (#141)

* Improve Sample Code

* Formatting

* Fix index.html

* Charles review (#143)

* Charles review of orchestration sample code

* More fixes

* Revert ordering of messagesHistory

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Co-authored-by: SAP Cloud SDK Bot <[email protected]>
Co-authored-by: Charles Dubois <[email protected]>

Author: 3 people