Implement Toast Collections (Windows 10 1703 Feature)

[Windos]

"Use collections to organize your app's toasts in Action Center. Collections help users locate information within Action Center more easily and allow for developers to better manage their notifications. The APIs below allow for removing, creating, and updating notification collections."

https://docs.microsoft.com/en-us/windows/uwp/design/shell/tiles-and-notifications/toast-collections

https://docs.microsoft.com/en-us/uwp/api/windows.ui.notifications.toastcollection
https://docs.microsoft.com/en-us/uwp/api/windows.ui.notifications.toastcollectionmanager