Add new Text and reading options preference into the a11y settings.

1. Set visible as false until completely finish the feature.
2. This preference has no action temporally, and will continually integrate features into.

Bug: 211503117
Test: manual test
Change-Id: I1404e6eca6bd8246ae844f1a287e6c4872a8fded

res/drawable/ic_adaptive_font_download.xml

@@ -0,0 +1,36 @@
+<?xml version="1.0" encoding="utf-8"?>
+<!--
+    Copyright (C) 2022 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.
+-->
+
+<layer-list xmlns:android="http://schemas.android.com/apk/res/android">
+    <item>
+        <com.android.settingslib.widget.AdaptiveIconShapeDrawable
+            android:width="@dimen/accessibility_icon_size"
+            android:height="@dimen/accessibility_icon_size"
+            android:color="@color/accessibility_feature_background"/>
+    </item>
+    <item android:gravity="center">
+        <vector
+            android:width="@dimen/accessibility_icon_foreground_size"
+            android:height="@dimen/accessibility_icon_foreground_size"
+            android:viewportWidth="24"
+            android:viewportHeight="24">
+            <path
+                android:fillColor="@android:color/white"
+                android:pathData="M6.4,18h2.1l1.1,-3.05h4.8L15.5,18h2.1L13.05,6h-2.1zM10.2,13.2l1.75,-4.95h0.1l1.75,4.95zM4,22q-0.825,0 -1.413,-0.587Q2,20.825 2,20L2,4q0,-0.825 0.587,-1.413Q3.175,2 4,2h16q0.825,0 1.413,0.587Q22,3.175 22,4v16q0,0.825 -0.587,1.413Q20.825,22 20,22zM4,20h16L20,4L4,4v16zM4,4v16L4,4z"/>
+        </vector>
+    </item>
+</layer-list>