Hide system apps until installed (1/2)

Applying this mechanism for system carrier apps to make visibility
reasonable from the user's perspective. In other words, before
hidden system apps have been installed, they wouldn't be listed
via APIs in PackageManager which are used at all apps list and
search in Settings and so on.

Test: manual
Test: atest CarrierAppUtilsTest
Test: atest PackageManagerTest
Bug: 74068582
Change-Id: Id3ff138ad529b909d9bbf6719af3a553b909ccbb