Add icons to NLS mgmt page

Test: manual
Fixes: 181125169
Change-Id: Id8340db5f2901947c4e63e459aad1fee52437a9f

res/drawable/ic_ongoing_notification.xml

@@ -0,0 +1,25 @@
+<!--
+  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="24.0"
+        android:viewportHeight="24.0"
+        android:tint="?android:attr/colorControlNormal">
+    <path
+        android:fillColor="@android:color/white"
+        android:pathData="M12,18h0.17l-1.09,-1.09 1.41,-1.41L16,19l-3.5,3.5 -1.41,-1.41L12.17,20L12,20c-2.05,0 -4.09,-0.78 -5.66,-2.34 -3.12,-3.12 -3.12,-8.19 0,-11.31l1.41,1.41c-2.34,2.34 -2.34,6.15 0,8.49C8.89,17.38 10.4,18 12,18zM17.66,6.34c3.12,3.12 3.12,8.19 0,11.31l-1.41,-1.41c2.34,-2.34 2.34,-6.15 0,-8.49C15.11,6.62 13.6,6 12,6h-0.17l1.09,1.09L11.5,8.5 8,5l3.5,-3.5 1.41,1.41L11.83,4L12,4c2.05,0 4.09,0.78 5.66,2.34z"/>
+</vector>