Add APIs to get system bar heights

In multi-display devices, there might be differnt cutout on each display
which also causes different status bar height.

Now we no longer overlay the status_bar_height dimen and keep it as
default value and add APIs to calculate the status bar size.

- Add APIs for getting status_bar_height & quick_qs_offset_height in
  system.
- Add APIs for getting split_shade_header_height and
  qs_header_system_icons_area_height in SystemUI.
- Remove all resource overlay for status_bar_height &
  quick_qs_offset_height.

Bug: 186604541
Test: atest SmallClockPositionTest DisplayLayoutTest
      HideDisplayCutoutOrganizerTest SizeCompatTests
      NotificationPanelViewControllerTest
Change-Id: I5a6dfcc6ff06da8ea0fe119fc9d4c089f13b0dff