Migrate libphotoviewer to androidx

Updated Android.bp and sample/Android.bp to use androidx.

Test: make libphotoviewer
Bug: 76692459
Change-Id: I54ae1130ef3191b52803e1bcc5e336edc3583fd3
Merged-In: I54ae1130ef3191b52803e1bcc5e336edc3583fd3
17 files changed