Add cts verifier for safe insets of display cutout

Bug: 151316921
Test: manual - enable any cutout overlay in developer option and launch
DisplayCutout test in CTS Verifier app

Change-Id: I1d9cc572d5c7513388de266b5925d4eb942473b1
Merged-In: I1d9cc572d5c7513388de266b5925d4eb942473b1
6 files changed