Move pointer and touchpad customization settings to their own pages.

Bug: 269100659
Test: PointerTouchpadFragmentTest
Test: PointerTouchpadPreferenceControllerTest
Flag: android.view.flags.enable_vector_cursor_a11y_settings
Change-Id: I0dccf48f9b5416ad8e6d3c263188d4bb850f69e9
13 files changed