Allow fullscreen swipes for shade and bouncer.

This changelist adds support for fullscreen swipes on the dream
and glanceable hub for bringing down the notification shade and
dragging up the keyguard bouncer.

Test: atest BouncerFullscreenSwipeTouchHandlerTest#testFullSwipe_notInitiatedWhenNotAvailable
Test: atest BouncerFullscreenSwipeTouchHandlerTest#testFullSwipe_initiatedWhenAvailable
Test: atest BouncerFullscreenSwipeTouchHandlerTest#testFullSwipe_motionCancelResetsTouchState
Test: atest BouncerFullscreenSwipeTouchHandlerTest#testFullSwipe_motionUpResetsTouchState
Test: atest ShadeTouchHandlerTest#testFullVerticalSwipe_initiatedWhenAvailable
Test: atest ShadeTouchHandlerTest#testFullVerticalSwipe_notInitiatedWhenNotAvailable
Test: atest ShadeTouchHandlerTest#testFullVerticalSwipe_resetsTouchStateOnCancell
Test: atest ShadeTouchHandlerTest#testFullVerticalSwipe_resetsTouchStateOnUp
Test: atest CommunalViewModelTest#glanceableTouchAvailable_availableWhenNestedScrollingWithoutConsumption
Fixes: 340177049
Flag: com.android.systemui.hubmode_fullscreen_vertical_swipe
Change-Id: Ib65987789785b0c3b5edca8cb8cfb858f22fc0a7