Implement screen edge swipe for prototype

Removed nav bar edge swipes and replaced for screen edge swipe. The two
new gestures always stay left and right of the screen except for
landscape where only the side opposite of the navigation bar will exist.
The gestures will only activate past a second slop or if user executes
gesture really quickly (less than a tap timeout 100ms).

Bug: 112934365
Test: atest QuickStepControllerTest

Change-Id: I8ae98bd638943d9f76e455bc000a601f96e68d2c