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/unit/src/com/android/settings/slices/SliceTestUtils.java

@@ -35,6 +35,7 @@ class SliceTestUtils {
     public static final int FAKE_ICON = 1234;
     public static final String FAKE_FRAGMENT_NAME = FakeIndexProvider.class.getName();
     public static final String FAKE_CONTROLLER_NAME = FakeToggleController.class.getName();
+    public static final int FAKE_HIGHLIGHT_MENU_RES = FakeToggleController.HIGHLIGHT_MENU_RES;
 
 
     public static void insertSliceToDb(Context context, String key) {
@@ -75,6 +76,8 @@ class SliceTestUtils {
         values.put(SlicesDatabaseHelper.IndexColumns.UNAVAILABLE_SLICE_SUBTITLE,
                 customizedUnavailableSliceSubtitle);
         values.put(SlicesDatabaseHelper.IndexColumns.PUBLIC_SLICE, isPublicSlice);
+        values.put(SlicesDatabaseHelper.IndexColumns.HIGHLIGHT_MENU_RESOURCE,
+                FAKE_HIGHLIGHT_MENU_RES);
 
         db.replaceOrThrow(SlicesDatabaseHelper.Tables.TABLE_SLICES_INDEX, null, values);
         db.close();