Add shell command for edge resize handle size

Bug: 335850704
Test: atest WMShellUnitTests:ResizeHandleSizeProviderTests
Test: atest WMShellUnitTests:ResizeHandleSizeProviderParameterizedTests
Flag: com.android.window.flags.enable_windowing_edge_drag_resize
Change-Id: I4dc4b7f0db8fca79414c4010d0bc81b090d5bdc5
4 files changed