Adding an api to mark a package as distracting

Adding a package manager api to mark packages as distracting to the
user. While doing this, some restrictions can be imposed on these
packages to enable the user to refrain from using them often.

Test: Unit tests:
atest com.android.server.pm.PackageManagerSettingsTests\
com.android.server.pm.PackageUserStateTest

GTS test: atest GtsSuspendAppsTestCases

Bug: 117407613
Change-Id: I5d0606b3c6c1edcaba001852d10f1a9e140b8028