Use InsetsVisibilities to carry requested visibilities

InsetsState contains much more information than visibilities, such as
display frame, display cutout, rounded corners, privacy indicator
bounds, and frames of of insets sources. The control target only needs
to send the requested visibilities to WMS, so it can be too heavy to use
InsetsState.

This CL introduces an new class, InsetsVisibilities, which only contains
which type has which visibility. So it uses less memory, and it is more
efficient on copying and checking the equality.

Fix: 194186241
Test: atest InsetsVisibilitiesTest WindowAddRemovePerfTest
            InsetsControllerTest RegisterStatusBarResultTest
            CommandQueueTest LightsOutNotifControllerTest
            ActivityRecordTests DisplayContentTests
            DisplayPolicyLayoutTests InsetsPolicyTest
            InsetsSourceProviderTest InsetsStateControllerTest
            WindowFrameTests WindowManagerServiceTests WindowStateTests
Change-Id: I86c1b26b4383bfa3b924726d580e5706e13ba735