Add controllers for default app shortcut preferences.

- add the default app shortcut preferences to the preference screen
xml instead of creating them dynamically in the fragment.
- add controller for each of the shortcut preference.
- move the corresponding shortcut detail settings into the appinfo
package.
- add individual preference screen xml for the shortcut detail settings
instead of using the shared screen template.

Bug: 69384089
Test: make RunSettingsRoboTests
Change-Id: I7bc0b3b727e87fb1a32a82291e64b8e290947671

res/xml/write_system_settings_permissions_details.xml

@@ -0,0 +1,33 @@
+<?xml version="1.0" encoding="utf-8"?>
+<!-- Copyright (C) 2017 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.
+-->
+
+<PreferenceScreen xmlns:android="http://schemas.android.com/apk/res/android"
+    android:key="write_system_settings_permission_detail_settings"
+    android:title="@string/write_settings">
+
+    <SwitchPreference
+        android:key="app_ops_settings_switch"
+        android:title="@string/permit_write_settings"/>
+
+    <Preference
+        android:key="app_ops_settings_preference"
+        android:title="@string/write_settings_preference"/>
+
+    <Preference
+        android:summary="@string/write_settings_description"
+        android:selectable="false"/>
+
+</PreferenceScreen>