NepaliDatePickerViewController
Hosts the full-size NepaliDatePicker for a Swift caller.
Composable functions cannot be called from Swift, so this factory is the iOS entry point to the calendar grid. Wrap the returned controller in a UIViewControllerRepresentable to embed it in SwiftUI.
Parameters
date selected when the picker first appears, or null for no selection.
language, date format and digit script the picker renders with.
first Bikram Sambat year the picker allows.
last Bikram Sambat year the picker allows.
policy deciding which dates are enabled, or null to allow every date.
appearance and behaviour knobs, or null for the library defaults.
the days to mark, or null to draw the calendar plain. Marking never blocks a date; pass a policy's asSelectableDates() through selectableDates for that.
receives the content height in points, so the caller can size its frame.
invoked with the current selection whenever it changes, including the initial value.