Add waiting screen before PS setup completion

At the end of PS setup just before showing the final sucess screen this
change adds a new screen with loading layout which enables profile quiet
mode.
After enabling quiet mode checks if user is stopped before removing the
loading layout screen. Until user is stopped loading screen will be
shown.

Bug: 329042236
Bug: 328393532
Test: Manual verify new delay screen is shown
Change-Id: Iac3fd2f0f5c75a64719fbce32ff4dbfb533322d5