[Feature] Flyout page support

[BurkusCat]

Is your feature request related to a problem? Please describe.
Flyout pages haven't been properly tested. A very basic flyout page probably works but they haven't been explored yet. They need tested out with the existing framework and well thought out changes need to be made to improve their functionality with this library.

Describe the solution you'd like
An analysis needs done to find out what should happen, but a good way to navigate (potentially requiring #1 first) to different pages within flyouts and to leave flyouts would be good.

Describe alternatives you've considered
N/A

Proposed APIs

// INavigationService
void SwitchFlyoutDetail<T>() // this swaps out the current detail page with this new one

void PushFlyoutDetail<T>() // this pushes an additional page on top of the current detail

Additional context

• Does SelectTab need updated to be able to search within Flyouts?

[BurkusCat]

I wonder if this fix: dotnet/maui#18451 helps this