[Panlingual] Implement entries of Panlingual in settings UI part.

- Path 1 : System -> Language & Input -> App Languages -> per app
 language
 - path 2 : System -> Apps -> App Info -> per app language
 Video: https://screencast.googleplex.com/cast/NjUyNTUzMDY0MTc5MzAyNHxjNTg2MzMwYS0yOA

Bug: 206854105
Test: local test pass
Test: atest pass

Change-Id: Ic06fa4f0c6ec68680eb828032b6e3f479b412dc4

src/com/android/settings/applications/appinfo/AppInfoDashboardFragment.java

@@ -205,6 +205,10 @@ public class AppInfoDashboardFragment extends DashboardFragment
         use(AdvancedAppInfoPreferenceCategoryController.class).setChildren(Arrays.asList(
                 writeSystemSettings, drawOverlay, pip, externalSource, acrossProfiles,
                 alarmsAndReminders));
+
+        final AppLocalePreferenceController appLocale =
+                use(AppLocalePreferenceController.class);
+        appLocale.setParentFragment(this);
     }
 
     @Override