Updated Net7 To Net9

[Hirak1788]

We have made some updates to your “Naxam.FSCalendar” binding library, adding .NET 9 support. Initially, we attempted to use the DLL file, but it didn’t work.
Instead, we tried referencing the project directly from our solution, and that worked.
However, the library currently functions only on physical devices and not on simulators, as it supports only the arm-ios architecture.