Fix Resource Monitoring sample app

[evgenyfedorov2]

Summary

As mentioned here, the sample app outputs incorrect values over and over again.

The change fixes the sample by adding Host, which is necessary for the underlying BackgroundService in Resource Monitoring.

---

Internal previews

📄 File	🔗 Preview link
docs/core/diagnostics/diagnostic-resource-monitoring.md	Resource monitoring

[kkostrzewa-coupa]

With this change, ctrl+c cancelation no longer works. I think the Console.CancelKeyPress event handler needs to be placed before the await AnsiConsole.Live(table)..., or else we get an infinite loop.

[evgenyfedorov2]

With this change, ctrl+c cancelation no longer works. I think the Console.CancelKeyPress event handler needs to be placed before the await AnsiConsole.Live(table)..., or else we get an infinite loop.

Updated, thank you!

[evgenyfedorov2]

@IEvangelist whenever you have time, could you please review this?