Prelaunch support like uwp apps in WinUi3

Nobody has claimed this yet.

Startup performance of UWP apps on desktop device family devices is quite improved by proactively launching the apps that users use most often in the background.

is there anything like that supported in WinUi3?

```
///
/// This method should be called only when the caller
/// determines that we're running on a system that
/// supports CoreApplication.EnablePrelaunch.
///
private void TryEnablePrelaunch()
{
Windows.ApplicationModel.Core.CoreApplication.EnablePrelaunch(true);
}
```

Also mentioned that

> Performance considerations
> Today in version 1.0 of Windows App SDK, launch speeds, RAM usage, and installation size of WinUI 3 apps are larger/slower than seen in UWP. We are actively working to improve this. We will have more information to share in the future.

Are there any guidance for moving to WinUi3 for production ready apps or is it still not matured enough as UWP?
https://learn.microsoft.com/en-us/windows/apps/windows-app-sdk/migrate-to-windows-app-sdk/what-is-supported

Start with the linked Windows App SDK migration guidance and the issue's CoreApplication.EnablePrelaunch example. Determine whether equivalent prelaunch support exists for WinUI 3 and whether the documented production-readiness guidance addresses the reported performance differences; no source files or tests are named.

Written by the indexing model from the issue text.