Storage category UX changes in Storage Settings

- Change category types.
- Use Intent.ACTION_VIEW to show content of each category.
- Sort order of each category by storage size.

Bug: 170918505
Test: make RunSettingsRoboTests ROBOTEST_FILTER=StorageItemPreferenceTest
      make RunSettingsRoboTests ROBOTEST_FILTER=StorageItemPreferenceControllerTest
      manual
      Click each category in Storage Settings.
Change-Id: Ib7beb1779a0fcbfd7b8ec52446707b105fcebff5

res/drawable/ic_trash_can.xml

@@ -0,0 +1,26 @@
+<!--
+    Copyright (C) 2021 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.
+-->
+<vector
+    xmlns:android="http://schemas.android.com/apk/res/android"
+    android:width="24dp"
+    android:height="24dp"
+    android:viewportWidth="24"
+    android:viewportHeight="24">
+  <path
+      android:pathData="M15,3V4H20V6H19V19C19,20.1 18.1,21 17,21H7C5.9,21 5,20.1 5,19V6H4V4H9V3H15ZM7,19H17V6H7V19ZM9,8H11V17H9V8ZM15,8H13V17H15V8Z"
+      android:fillColor="#5F6368"
+      android:fillType="evenOdd"/>
+</vector>