Separate suggestions and conditions.

This is the initial change for updating the suggestion cards:
- add a feature flag to swap between the new and current UI
- change suggestions to a standalone dashboard item. It becomes a
  horizontal scroll list that won't collapse/expand.
- the expand/collapse logic now only control the conditions list
- add draft for the new suggestion UI elements, but detail to fine-tune
to match the UI spec will come in following changes.

Bug: 70573674
Test: make RunSettingsRoboTests
Change-Id: I00c901e2598b26a34288fc73fd6031cc26a29ac6

src/com/android/settings/dashboard/DashboardFeatureProviderImpl.java

@@ -33,12 +33,14 @@ import android.support.annotation.VisibleForTesting;
 import android.support.v7.preference.Preference;
 import android.text.TextUtils;
 import android.util.ArrayMap;
+import android.util.FeatureFlagUtils;
 import android.util.Log;
 import android.util.Pair;
 
 import com.android.internal.logging.nano.MetricsProto.MetricsEvent;
 import com.android.settings.R;
 import com.android.settings.SettingsActivity;
+import com.android.settings.core.FeatureFlags;
 import com.android.settings.core.instrumentation.MetricsFeatureProvider;
 import com.android.settings.overlay.FeatureFactory;
 import com.android.settingslib.drawer.CategoryManager;
@@ -213,6 +215,11 @@ public class DashboardFeatureProviderImpl implements DashboardFeatureProvider {
         launchIntentOrSelectProfile(activity, tile, intent, MetricsEvent.DASHBOARD_SUMMARY);
     }
 
+    @Override
+    public boolean useSuggestionUiV2() {
+        return FeatureFlagUtils.isEnabled(mContext, FeatureFlags.SUGGESTION_UI_V2);
+    }
+
     private void bindSummary(Preference preference, Tile tile) {
         if (tile.summary != null) {
             preference.setSummary(tile.summary);