AppClone: Add preference to display new page Cloned Apps

Also adds a faeture flag and controller class for this page.
UX path: Apps > Cloned Apps

Bug: 249916503
Bug: 248235441
Test: manual
Test: make RunSettingsRoboTests -j30 ROBOTEST_FILTER=AppsPreferenceControllerTest
Test: make RunSettingsRoboTests -j30 ROBOTEST_FILTER=ClonedAppsPreferenceControllerTest
Change-Id: I2f68f4365ce08481c7db7bfdda4fdffc369321a9
diff --git a/src/com/android/settings/Settings.java b/src/com/android/settings/Settings.java
index 53960b4..342ab70 100644
--- a/src/com/android/settings/Settings.java
+++ b/src/com/android/settings/Settings.java
@@ -312,6 +312,8 @@
     public static class AppBubbleNotificationSettingsActivity extends SettingsActivity { /* empty */ }
     public static class NotificationAssistantSettingsActivity extends SettingsActivity{ /* empty */ }
     public static class NotificationAppListActivity extends SettingsActivity { /* empty */ }
+    /** Activity to manage Cloned Apps page */
+    public static class ClonedAppsListActivity extends SettingsActivity { /* empty */ }
     public static class NotificationReviewPermissionsActivity extends SettingsActivity { /* empty */ }
     public static class AppNotificationSettingsActivity extends SettingsActivity { /* empty */ }
     public static class ChannelNotificationSettingsActivity extends SettingsActivity { /* empty */ }
diff --git a/src/com/android/settings/applications/ClonedAppsPreferenceController.java b/src/com/android/settings/applications/ClonedAppsPreferenceController.java
new file mode 100644
index 0000000..76ccf06
--- /dev/null
+++ b/src/com/android/settings/applications/ClonedAppsPreferenceController.java
@@ -0,0 +1,46 @@
+/*
+ * Copyright (C) 2022 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package com.android.settings.applications;
+
+import static com.android.settings.core.SettingsUIDeviceConfig.CLONED_APPS_ENABLED;
+
+import android.content.Context;
+import android.provider.DeviceConfig;
+
+import com.android.settings.core.BasePreferenceController;
+
+/**
+ * A preference controller handling the logic for updating the summary of cloned apps.
+ */
+public class ClonedAppsPreferenceController extends BasePreferenceController {
+
+    public ClonedAppsPreferenceController(Context context, String preferenceKey) {
+        super(context, preferenceKey);
+    }
+
+    @Override
+    public CharSequence getSummary() {
+        // todo(b/249916469): Update summary once we have mechanism of allowlisting available
+        //  for cloned apps.
+        return null;
+    }
+    @Override
+    public int getAvailabilityStatus() {
+        return DeviceConfig.getBoolean(DeviceConfig.NAMESPACE_SETTINGS_UI,
+                CLONED_APPS_ENABLED, false) ? AVAILABLE : UNSUPPORTED_ON_DEVICE;
+    }
+}
diff --git a/src/com/android/settings/core/SettingsUIDeviceConfig.java b/src/com/android/settings/core/SettingsUIDeviceConfig.java
index 94074df..5689067 100644
--- a/src/com/android/settings/core/SettingsUIDeviceConfig.java
+++ b/src/com/android/settings/core/SettingsUIDeviceConfig.java
@@ -42,4 +42,9 @@
      * {@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";
 }