Add monochrome icon (#144)

app/src/main/res/drawable/ic_launcher_monochrome.xml

@@ -0,0 +1,38 @@
+<?xml version="1.0" encoding="utf-8"?><!--
+  ~ Copyright 2022 Tarsin Norbin
+  ~
+  ~ This file is part of EhViewer
+  ~
+  ~ EhViewer is free software: you can redistribute it and/or modify it
+  ~ under the terms of the GNU GeneralPublic License as published
+  ~ by the Free Software Foundation,either version 3 of the License, or
+  ~ (at your option) any later version.
+  ~
+  ~ EhViewer is distributed in the hope that it will be useful, but WITHOUT
+  ~ ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+  ~ FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details.
+  ~
+  ~ You should have received a copy of the GNU General Public License along with EhViewer.
+  ~ If not, see <https://www.gnu.org/licenses/>.
+  -->
+
+<vector xmlns:android="http://schemas.android.com/apk/res/android"
+    android:width="44dp"
+    android:height="44dp"
+    android:viewportWidth="108"
+    android:viewportHeight="108">
+    <group
+        android:scaleX="0.37947997"
+        android:scaleY="0.37947997"
+        android:translateX="35.1"
+        android:translateY="39.584126">
+        <path
+            android:fillColor="@android:color/white"
+            android:fillType="evenOdd"
+            android:pathData="M39.893,68.066L39.893,75.977L0,75.977L0,4.59L39.893,4.59L39.893,12.5L8.984,12.5L8.984,34.766L38.086,34.766L38.086,42.578L8.984,42.578L8.984,68.066L39.893,68.066Z" />
+        <path
+            android:fillColor="@android:color/white"
+            android:fillType="evenOdd"
+            android:pathData="M99.609,75.977L90.918,75.977L90.918,41.699A23.436,23.436 0,0 0,90.662 38.109Q90.055,34.207 88.013,31.958Q85.629,29.334 81.028,28.863A20.84,20.84 0,0 0,78.906 28.76A23.134,23.134 0,0 0,74.45 29.16Q71.926,29.656 69.994,30.767A11.122,11.122 0,0 0,66.968 33.301A13.32,13.32 0,0 0,64.756 37.276Q63.399,40.971 63.213,46.495A53.517,53.517 0,0 0,63.184 48.291L63.184,75.977L54.395,75.977L54.395,0L63.184,0L63.184,22.266A66.935,66.935 0,0 1,63.115 25.383Q63.043,26.914 62.897,28.251A33.547,33.547 0,0 1,62.695 29.785L63.281,29.785A16.11,16.11 0,0 1,69.394 24.035A19.448,19.448 0,0 1,70.068 23.682A20.88,20.88 0,0 1,77.292 21.622A25.763,25.763 0,0 1,79.98 21.484A32.643,32.643 0,0 1,85.483 21.917Q91.249,22.905 94.678,26.147Q98.472,29.735 99.347,36.631A35.274,35.274 0,0 1,99.609 41.064L99.609,75.977Z" />
+    </group>
+</vector>

app/src/main/res/mipmap-anydpi-v26/ic_launcher.xml

@@ -18,4 +18,5 @@
 <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_monochrome" />
 </adaptive-icon>

app/src/main/res/mipmap-anydpi-v26/ic_launcher_round.xml

@@ -18,4 +18,5 @@
 <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_monochrome" />
 </adaptive-icon>