Add helper methods for View attribute debugging

Adding abilities to debug:
- Attribute resolution stack (which resources are looked
  at when resolving an attribute)
- Attribute value source (where did each attribute value
  get defined)
- Get explicit style id (if a view had it set via style="...")

This feature will be behind Settings.Global flag that Android
Studio will set to the debugged application package ID.

Bug: 111439551
Test: atest CtsViewTestCases:android.view.cts.ViewStyleTest
Change-Id: Ib6f9fc81000bb867b5b94a68953c99b0bc802d6c