Refactor Power Usage Time Page.

- Show use time category

Screenshot:
[Screen time with hint] https://screenshot.googleplex.com/3cRLrwevzw4iytb
[Background time with hint] https://screenshot.googleplex.com/zEf8PcWopCVCRZR
[without hint] https://screenshot.googleplex.com/9bao9sVd8s7VRwM
[enter from app info (without category)] https://screenshot.googleplex.com/8sozxMrq8ojadiF

Bug: 302063050
Test: Manual
Change-Id: Ic967d05a173afa76c2a958e1332dedd9f83cd687

res/layout/power_usage_time.xml

@@ -0,0 +1,49 @@
+<?xml version="1.0" encoding="utf-8"?>
+<!--
+     Copyright (C) 2023 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.
+-->
+
+<LinearLayout
+    xmlns:android="http://schemas.android.com/apk/res/android"
+    android:layout_width="match_parent"
+    android:layout_height="wrap_content"
+    android:paddingStart="?android:attr/listPreferredItemPaddingStart"
+    android:paddingEnd="?android:attr/listPreferredItemPaddingEnd"
+    android:orientation="vertical">
+
+    <TextView
+        android:id="@+id/time_title"
+        android:layout_width="match_parent"
+        android:layout_height="wrap_content"
+        android:paddingTop="20dp"
+        android:textAlignment="viewStart"
+        android:textAppearance="?android:attr/textAppearanceLarge"
+        android:textColor="?android:attr/textColorPrimary" />
+
+    <TextView
+        android:id="@+id/time_summary"
+        android:layout_width="match_parent"
+        android:layout_height="wrap_content"
+        android:layout_marginVertical="4dp"
+        android:textAlignment="viewStart"
+        android:textAppearance="?android:attr/textAppearanceSmall"
+        android:textColor="?android:attr/textColorSecondary" />
+
+    <include layout="@layout/power_anomaly_hints"
+        android:visibility="gone"
+        android:id="@+id/anomaly_hints"
+        android:paddingBottom="20dp"/>
+
+</LinearLayout>