swiftui rectangle top corners radius
struct CornerRadiusStyle: ViewModifier {
    var radius: CGFloat
    var corners: UIRectCorner
    struct CornerRadiusShape: Shape {
        var radius = CGFloat.infinity
        var corners = UIRectCorner.allCorners
        func path(in rect: CGRect) -> Path {
            let path = UIBezierPath(roundedRect: rect, byRoundingCorners: corners, cornerRadii: CGSize(width: radius, height: radius))
            return Path(path.cgPath)
        }
    }
    func body(content: Content) -> some View {
        content
            .clipShape(CornerRadiusShape(radius: radius, corners: corners))
    }
}
extension View {
    func cornerRadius(radius: CGFloat, corners: UIRectCorner) -> some View {
        ModifiedContent(content: self, modifier: CornerRadiusStyle(radius: radius, corners: corners))
    }
}
