[WPP2] Image Preview Fragment

Created a new preview fragment for previewing static image wallpaper.
This is the first implementation. Further refining work is needed.

Test: Manual
Bug: 242908637
Change-Id: I50828cde9f5ed458db0b51905442d3196e0ab70a
diff --git a/res/layout/duo_tabs.xml b/res/layout/duo_tabs.xml
new file mode 100644
index 0000000..5a25376
--- /dev/null
+++ b/res/layout/duo_tabs.xml
@@ -0,0 +1,40 @@
+<?xml version="1.0" encoding="utf-8"?>
+<!--
+     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.
+-->
+<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
+    android:layout_width="match_parent"
+    android:layout_height="wrap_content"
+    android:layout_gravity="bottom"
+    android:divider="@drawable/duo_tabs_divider"
+    android:orientation="horizontal"
+    android:showDividers="middle">
+
+    <Button
+        android:id="@+id/tab_primary"
+        android:layout_width="match_parent"
+        android:layout_height="@dimen/separated_tabs_height"
+        android:layout_weight="1"
+        android:background="@drawable/duo_tabs_button_background"
+        android:gravity="center" />
+
+    <Button
+        android:id="@+id/tab_secondary"
+        android:layout_width="match_parent"
+        android:layout_height="@dimen/separated_tabs_height"
+        android:layout_weight="1"
+        android:background="@drawable/duo_tabs_button_background"
+        android:gravity="center" />
+</LinearLayout>