AppClone: Changes to display app list on Cloned Apps page.

- Filers app list
- Displays preference summary
- Display two-target view
- Display header text
- Metric for cloned app page
- Adds bridge class
- Disable "Show system" option

Bug: 259021576
Bug: 249916469
Test: make RunSettingsRoboTests -j64
Change-Id: Idcf213325ead9e298eb3e958b286adcd4c06c8d5

src/com/android/settings/core/SettingsUIDeviceConfig.java

@@ -42,9 +42,4 @@ public class SettingsUIDeviceConfig {
      * {@code true} whether or not event_log for generic actions is enabled. Default is true.
      */
     public static final String GENERIC_EVENT_LOGGING_ENABLED = "event_logging_enabled";
-
-    /**
-     * {@code true} if Cloned Apps menu is available in Apps page. Default is false.
-     */
-    public static final String CLONED_APPS_ENABLED = "cloned_apps_enabled";
 }