.NET 9 Support

[Axemasta]

The library currently doesn't work on .NET 9 for android due to BottomSheetBehavior moving to com.google.android.material.bottomsheet.BottomSheetBehavior. This has been reported in #142 and has been addressed in this PR.

Changes:

• Updated target .NET version to .NET 9
• Explicitly target latest maui controls release
• Update nuget versions to latest available
• Add props file to centrally manage net versions and target frameworks
• Fix android implementation to no longer crash when showing a bottom sheet
• Fix ios deadlock when using a RatioDetent with value not equal to 0.6f, this was caused by a recurisve layout loop kicking off infinite calls to Layout & LayoutSubViews. This was not an issue in .NET 8!
• Add prop files to solution
• Increase library version to 9.0.0