Add filtering to notification channel settings

Allow apps that are launching this page to specify targeted subsets of
settings that should be shown.

Test: settings notification robotests
Bug: 177246841
Change-Id: Ib491c43f1861a9775e3b25f39134cdbe105a7ff8

src/com/android/settings/notification/app/BubbleLinkPreferenceController.java

@@ -43,6 +43,11 @@ public class BubbleLinkPreferenceController extends NotificationPreferenceContro
         return areBubblesEnabled();
     }
 
+    @Override
+    boolean isIncludedInFilter() {
+        return false;
+    }
+
     @Override
     public String getPreferenceKey() {
         return KEY;