.NET: AG-UI support for .NET: Support for tool calling (#1896)
* Initial implementation
* tmp
* Replace function calling with a FunctionInvokingChatClient
* Cleanups
* Remove custom thread
* Fixing function calling server and client
* Cleanup
* Cleanup serialization
* Run dotnet format
* Pass logger factory
* Populate message properties
* Remove files
* Cleanups
* cleanup
* Cleanups
* More cleanup
* Simplify things
* Cleanup
* Clean up json serialization
* Additional tests
* Add service collection extensions for serialization
* Combine options in AGUIChatClient
* Additional tests
* Include tool calling in the sample, fix mixed server and client tool calls
* Fix tests
* More cleanups
* Fix tests
* Cleanups
* Dojo project and fixes
* Fix build
* Remove dojo
* Cleanup
* Address feedback
* address feedback
* Additional feedback
* Fix build
* Fix build
* Make packages packable
Javier Calvarro Nelson