Convert CreateShortcut to DashboardFragment

Created a new xml and CreateShortcutPreferenceController to deal with
querying package manager and display list on UI.

Bug: 74806595
Test: robotests
Change-Id: I0945245c3856d12b7751d26fca324d2dbf31b230

res/layout/activity_list.xml

@@ -1,36 +0,0 @@
-<?xml version="1.0" encoding="utf-8"?>
-<!--
-  Copyright (C) 2016 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.
-  -->
-
-<FrameLayout xmlns:android="http://schemas.android.com/apk/res/android"
-             android:layout_width="match_parent"
-             android:layout_height="match_parent">
-
-    <ListView
-        android:id="@android:id/list"
-        android:layout_width="match_parent"
-        android:layout_height="match_parent"/>
-
-    <TextView
-        android:id="@android:id/empty"
-        android:layout_width="match_parent"
-        android:layout_height="match_parent"
-        android:gravity="center"
-        android:text="@string/activity_list_empty"
-        android:visibility="gone"
-        android:textAppearance="?android:attr/textAppearanceMedium"/>
-
-</FrameLayout>