Runtime apply overlay by ThemeOverlayManager

a.Runtime overlay package should not be static
  since it's unable to FOTA upgrade
b.Implement ThemeOverlayManager to manage overlay packages

Test: atest testOverlayPackagesForDocumentsUI_shouldBeNonStatic
      can ensure installed RRO for Docsui is Non-Static
Test: atest DocumentsUIGoogleTests
Test: atest OverlayableTest
Test: manual check UI visual

Bug: 128689309
Bug: 131331107
Bug: 132671058
Bug: 132759377
Bug: 132783782
Bug: 132888127

Change-Id: I689894e226dee8266b523af25606e0100a224cd5