Consolidate Hero search result with SearchResultIconRow

With this, we can now show app title and support drag/drop for shortcut results.

Bug: 172245107
preview: https://drive.google.com/file/d/1A4eKKTDPht-MDbfA2VFI3OuAO36fc3AS/view?usp=sharing
Change-Id: Icf94a2d23b44bfe5527aea71e27178906e5deb3e

src/com/android/launcher3/touch/ItemClickHandler.java

@@ -96,6 +96,8 @@ public class ItemClickHandler {
             if (v instanceof PendingAppWidgetHostView) {
                 onClickPendingWidget((PendingAppWidgetHostView) v, launcher);
             }
+        } else if (tag instanceof RemoteActionItemInfo) {
+            onClickRemoteAction(launcher, (RemoteActionItemInfo) tag);
         }
     }