* Re-enable ImplicitUsings in samples and clean up NoWarns
* Fix dotnet format
* More dotnet format
* More dotnet format
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Co-authored-by: Chris <66376200+crickman@users.noreply.github.com>
* Basic agent invocation sample
* Simplify sample further.
* Add additional comment.
* Address code review comments.
* Suppress CA2000 and remove using from most basic sample, since the IChatClient instances involved do not do any disposal.