Add themed icon for Android 13 (#1524)

* Add monochrome adaptive icon variant

Added drawable for monochrome icons introduced in Android 13
Logo vector data copied from the existing launcher icon

* Formatting

app/src/main/res/drawable-v24/launcher_foreground_monochrome.xml

@@ -0,0 +1,12 @@
+<?xml version="1.0" encoding="utf-8"?>
+<vector xmlns:android="http://schemas.android.com/apk/res/android"
+    android:width="108dp"
+    android:height="108dp"
+    android:viewportHeight="108"
+    android:viewportWidth="108">
+
+    <path
+        android:fillColor="#FFFFFF"
+        android:pathData="M64.1,67.7 L69.3,67.7 L69.3,45.4 L74.9,45.4 L74.9,67.7 L80,67.7 L80,40.3 L53.6,40.3 L53.6,62.7 L48,62.7 L48,40.3 L28,40.3 L28,45.2 L32.7,45.2 L32.7,67.7 L37.6,67.7 L37.6,45.2 L43,45.2 L43,67.7 L58.6,67.7 L58.6,45.4 L64.1,45.4 Z" />
+
+</vector>

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

@@ -2,4 +2,5 @@
 <adaptive-icon xmlns:android="http://schemas.android.com/apk/res/android">
     <background android:drawable="@color/launcher_background" />
     <foreground android:drawable="@drawable/launcher_foreground" />
-</adaptive-icon>
+    <monochrome android:drawable="@drawable/launcher_foreground_monochrome" />
+</adaptive-icon>