Add a minimum console demo app (#198)
* Add a minimum console demo app
* Remove hardcoded values from sample.
* Make console project .net 9.0 only.
* Move minimum console demo to demo folder.
* Fix framework issue with demo project.
* Undo unintended commit.
* Address PR comments
* Fix build issue.
* Address PR Comments
* Rename Agent to AIAgent in new console app.
westey