Register DisplayAreaOrganizer for one handed (6/N)

Introduce OneHandeDisplayAreaOrganizer and AnimationController

Test: atest OneHandedDisplayAreaOrganizerTest
Test: atest OneHandedManagerImplTest
Test: atest OneHandedUITest
Test: atest OneHandedSettingsUtilTest
Test: atest SystemUITests
Test: atest DisplayAreaPolicyBuilderTest
Bug: 150747909
Change-Id: I654090adf404214056ef37d83bacd3f65fffc1ff