InAppPurchases Settings View

View that can contains premium-related settings in the app.

By default, SwiftyLaunch creates a view that simply tells the user that they have sucessfully subscribed to the premium plan and that they can show the system subscription management screen by tapping on the "Manage Subscription" button, which calls the InAppPurchases.showSubscriptionManagement() function.

This view can be found in the SettingsView.