Add preference controller for app header view.

- move code related to initializing/refreshing the app header from
AppInfoDashboardFragment into a new controller.
- this is the last preference logic in AppInfoDashboardFragment. With
this change, the conversion into dashboad fragment will be considered
as complete.
- remaining work for the bug will be enable the feature flag and remove
the obsolete InstalledAppDetails.

Bug: 69384089
Test: make RunSettingsRoboTests
Change-Id: I14056bf291278b2b36f9502177c84edd6a899d0f