[4/4] Move new picker logic to AOSP

- Move main activity to WallpaperPicker2.

Bug: 190354625
Test: Build and run the app
Change-Id: Ia1ee9df9307345c463d7cd84a641c3654f68877e
Merged-In: Ia1ee9df9307345c463d7cd84a641c3654f68877e
diff --git a/AndroidManifest.xml b/AndroidManifest.xml
index d2d81ec..5c2eeb5 100755
--- a/AndroidManifest.xml
+++ b/AndroidManifest.xml
@@ -68,6 +68,13 @@
       </intent-filter>
     </activity>
 
+    <activity android:name="com.android.wallpaper.picker.CustomizationPickerActivity"
+        android:label="@string/app_name"
+        android:resizeableActivity="false"
+        android:theme="@style/WallpaperTheme.NoBackground"
+        android:exported="false">
+    </activity>
+
     <activity android:name="com.android.wallpaper.picker.DeepLinkActivity"
         android:theme="@style/WallpaperTheme.NoBackground"
         android:exported="true">