Integrate DisplayLayout for One handed mode

1) Handle rotation
2) Initialize DisplayLayout in dagger and update when
   onDisplayAdded() & onDisplayRemoved()
3) Refact OneHandedTouchHandler
4) Refact OneHandedBackgroundPanelOrganizer
5) Refact OneHandedDisplayAreaOrganizer

Test: atest WMShellUnitTests
Bug:182899148
Bug:182633327
Bug:183172404
Bug:183489178
Bug:183559944
Bug:183065937
Bug:183005910
Bug:183063280
Bug:183162084
Bug:181423645
Bug:177497107
Change-Id: Ie7a4fa97df5f6a3963a55bd507d36e026e971bab