Demo 13 - Add navigation to canvas app

Objective: In this demo, you will show how to add navigation between screens in a canvas app.

Task 13.1 - Add screen and navigation

1. In the demo solution, edit the Pet Training canvas app.

2. Add a Blank Screen.
3. Rename to DetailScreen.
4. Copy and Paste MainHeader from MainScreen to DetailScreen and rename as DetailHeader and change Text to PetList.Selected.'Pet Name'.
5. In the PetList gallery, set OnSelect to Navigate(DetailScreen).
6. Add Left icon to top left of DetailScreen and set OnSelect to Back().
7. Demonstrate selecting a Pet and using the Back button.