Support slice deep links highlighting menu entries

- Add an interface to get highlight menu key resource in Sliceable
- Force implementing the new interface in TogglePreferenceController and
  CustomSliceable at syntax level
- Update the slice index db schema

Bug: 204695404
Test: manual, robotest build pass, unit
Change-Id: I0b5068bccd04f1590023de7f3385bc0a4c6fa47b

tests/robotests/src/com/android/settings/testutils/FakeToggleController.java

@@ -27,6 +27,7 @@ import com.android.settings.slices.SliceBackgroundWorker;
 public class FakeToggleController extends TogglePreferenceController {
 
     public static final String AVAILABILITY_KEY = "fake_toggle_availability_key";
+    public static final int HIGHLIGHT_MENU_RES = 5678;
 
     public static final IntentFilter INTENT_FILTER = new IntentFilter(
             WifiManager.WIFI_AP_STATE_CHANGED_ACTION);
@@ -70,6 +71,11 @@ public class FakeToggleController extends TogglePreferenceController {
         return true;
     }
 
+    @Override
+    public int getSliceHighlightMenuRes() {
+        return HIGHLIGHT_MENU_RES;
+    }
+
     @Override
     public Class<? extends SliceBackgroundWorker> getBackgroundWorkerClass() {
         return TestWorker.class;