Add AppCompat theme which points to DeviceDefault.

Where possible, this theme redirects support lib attributes to point to
their equivalent values in the device default theme. This is an early
submit to enable testing. TODO's are left in where more expansion is
required to create overlayable values.

Bug: 140443143

Test: manual test in Paint Booth
Change-Id: I9c74d8fd8551e187b36265890895fdbc3c8b70e7
3 files changed