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

tests/robotests/src/com/android/settings/applications/ClonedAppsPreferenceControllerTest.java

@@ -0,0 +1,71 @@
+/*
+ * 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 android.provider.DeviceConfig.NAMESPACE_SETTINGS_UI;
+
+import static com.android.settings.core.BasePreferenceController.AVAILABLE;
+
+import static com.google.common.truth.Truth.assertThat;
+
+import static org.mockito.Mockito.spy;
+
+import android.content.Context;
+import android.provider.DeviceConfig;
+
+import androidx.test.core.app.ApplicationProvider;
+
+import com.android.settings.core.SettingsUIDeviceConfig;
+import com.android.settings.testutils.shadow.ShadowDeviceConfig;
+
+import org.junit.Before;
+import org.junit.Test;
+import org.junit.runner.RunWith;
+import org.robolectric.RobolectricTestRunner;
+import org.robolectric.annotation.Config;
+
+@RunWith(RobolectricTestRunner.class)
+@Config(shadows = {ShadowDeviceConfig.class})
+public class ClonedAppsPreferenceControllerTest {
+
+    private ClonedAppsPreferenceController mController;
+    private static final String KEY = "key";
+    private Context mContext;
+
+    @Before
+    public void setUp() {
+        mContext = spy(ApplicationProvider.getApplicationContext());
+        mController = new ClonedAppsPreferenceController(mContext, KEY);
+    }
+
+    @Test
+    public void getAvailabilityStatus_featureNotEnabled_shouldNotReturnAvailable() {
+        DeviceConfig.setProperty(NAMESPACE_SETTINGS_UI, SettingsUIDeviceConfig.CLONED_APPS_ENABLED,
+                "false", true /* makeDefault */);
+
+        assertThat(mController.getAvailabilityStatus()).isNotEqualTo(AVAILABLE);
+    }
+
+    @Test
+    public void getAvailabilityStatus_featureEnabled_shouldReturnAvailable() {
+        DeviceConfig.setProperty(NAMESPACE_SETTINGS_UI, SettingsUIDeviceConfig.CLONED_APPS_ENABLED,
+                "true", true /* makeDefault */);
+
+        assertThat(mController.getAvailabilityStatus()).isEqualTo(AVAILABLE);
+    }
+
+}