add GrapheneOS icon

AndroidManifest.xml

@@ -147,7 +147,8 @@
     <application
             android:name=".SettingsApplication"
             android:label="@string/settings_label"
-            android:icon="@drawable/ic_launcher_settings"
+            android:icon="@mipmap/ic_launcher"
+            android:roundIcon="@mipmap/ic_launcher_round"
             android:theme="@style/Theme.Settings"
             android:hardwareAccelerated="true"
             android:requiredForAllUsers="true"

res/drawable/ic_launcher_foreground.xml

@@ -0,0 +1,30 @@
+<!--
+  Copyright (C) 2021 Google Inc.
+
+  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="108dp"
+    android:height="108dp"
+    android:viewportWidth="108"
+    android:viewportHeight="108">
+    <group
+        android:scaleX="2.277"
+        android:scaleY="2.277"
+        android:translateX="26.676"
+        android:translateY="26.676">
+        <path
+            android:fillColor="#000000"
+            android:pathData="M19.5,12c0,-0.23 -0.01,-0.45 -0.03,-0.68l1.86,-1.41c0.4,-0.3 0.51,-0.86 0.26,-1.3l-1.87,-3.23c-0.25,-0.44 -0.79,-0.62 -1.25,-0.42l-2.15,0.91c-0.37,-0.26 -0.76,-0.49 -1.17,-0.68l-0.29,-2.31C14.8,2.38 14.37,2 13.87,2h-3.73C9.63,2 9.2,2.38 9.14,2.88L8.85,5.19c-0.41,0.19 -0.8,0.42 -1.17,0.68L5.53,4.96c-0.46,-0.2 -1,-0.02 -1.25,0.42L2.41,8.62c-0.25,0.44 -0.14,0.99 0.26,1.3l1.86,1.41C4.51,11.55 4.5,11.77 4.5,12s0.01,0.45 0.03,0.68l-1.86,1.41c-0.4,0.3 -0.51,0.86 -0.26,1.3l1.87,3.23c0.25,0.44 0.79,0.62 1.25,0.42l2.15,-0.91c0.37,0.26 0.76,0.49 1.17,0.68l0.29,2.31C9.2,21.62 9.63,22 10.13,22h3.73c0.5,0 0.93,-0.38 0.99,-0.88l0.29,-2.31c0.41,-0.19 0.8,-0.42 1.17,-0.68l2.15,0.91c0.46,0.2 1,0.02 1.25,-0.42l1.87,-3.23c0.25,-0.44 0.14,-0.99 -0.26,-1.3l-1.86,-1.41C19.49,12.45 19.5,12.23 19.5,12zM12.04,15.5c-1.93,0 -3.5,-1.57 -3.5,-3.5s1.57,-3.5 3.5,-3.5s3.5,1.57 3.5,3.5S13.97,15.5 12.04,15.5z" />
+    </group>
+</vector>

res/mipmap-anydpi/ic_launcher.xml

@@ -0,0 +1,6 @@
+<?xml version="1.0" encoding="utf-8"?>
+<adaptive-icon xmlns:android="http://schemas.android.com/apk/res/android">
+    <background android:drawable="@color/ic_launcher_background" />
+    <foreground android:drawable="@drawable/ic_launcher_foreground" />
+    <monochrome android:drawable="@drawable/ic_launcher_foreground" />
+</adaptive-icon>

res/mipmap-anydpi/ic_launcher_round.xml

@@ -0,0 +1,6 @@
+<?xml version="1.0" encoding="utf-8"?>
+<adaptive-icon xmlns:android="http://schemas.android.com/apk/res/android">
+    <background android:drawable="@color/ic_launcher_background" />
+    <foreground android:drawable="@drawable/ic_launcher_foreground" />
+    <monochrome android:drawable="@drawable/ic_launcher_foreground" />
+</adaptive-icon>

res/values/ic_launcher_background.xml

@@ -0,0 +1,4 @@
+<?xml version="1.0" encoding="utf-8"?>
+<resources>
+    <color name="ic_launcher_background">#FFFFFF</color>
+</resources>