Persist CTA tile dismissed state

Create a repository that stores communal hub prefs in shared preferences.
For now it is just the CTA dismissed state, so it won't show up in GH
again once dismissed.

Bug: b/313462210
Flag: ACONFIG com.android.systemui.communal_hub DEVELOPMENT
Test: atest CommunalPrefsRepositoryImplTest
Test: atest CommunalInteractorTest
Test: atest CommunalViewModelTest
Change-Id: Id0f66dbcce434eed5fdd8cd834b8706a7d58c48f