overlay: Define themes stub package for ThemePicker

Issue: otter-39
Change-Id: Ida5ac8fd91ed7e94d6792e5608626402387ef916
diff --git a/overlay/packages/apps/ThemePicker/res/values/override.xml b/overlay/packages/apps/ThemePicker/res/values/override.xml
new file mode 100644
index 0000000..1ee6f35
--- /dev/null
+++ b/overlay/packages/apps/ThemePicker/res/values/override.xml
@@ -0,0 +1,21 @@
+<?xml version="1.0" encoding="utf-8"?>
+<!--
+
+     Copyright (C) 2018 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.
+-->
+<resources>
+    <string name="themes_stub_package" translatable="false">eco.shift.partner.customization</string>
+    <string name="clocks_stub_package" translatable="false">eco.shift.partner.customization</string>
+</resources>