Add an icon for quillnote

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

@@ -0,0 +1,20 @@
+<vector xmlns:android="http://schemas.android.com/apk/res/android"
+    android:width="192dp"
+    android:height="192dp"
+    android:viewportWidth="50.8"
+    android:viewportHeight="50.8">
+  <path
+      android:pathData="M6.35,44.45H25.4M6.35,24.606h15.875M44.45,24.606h-7.144M6.35,34.925H25.4M30.162,34.925H44.45M22.319,39.758l3.08,4.692 4.692,-3.081"
+      android:strokeLineJoin="round"
+      android:strokeWidth="3.175"
+      android:fillColor="#00000000"
+      android:strokeColor="#000"
+      android:strokeLineCap="round"/>
+  <path
+      android:pathData="M33.454,5.588s-18.766,12.323 -6.443,31.09M33.454,5.588s12.323,18.766 -6.443,31.09M32.649,9.475l-5.154,24.87M30.071,21.91l-4.313,-6.568M28.944,27.351l7.506,-4.93"
+      android:strokeLineJoin="round"
+      android:strokeWidth="3.175"
+      android:fillColor="#00000000"
+      android:strokeColor="#000"
+      android:strokeLineCap="round"/>
+</vector>

app/src/main/res/xml/grayscale_icon_map.xml

@@ -461,6 +461,7 @@
     <icon drawable="@drawable/pubg" package="com.tencent.ig" name="PUBG" />
     <icon drawable="@drawable/pushbullet" package="com.pushbullet.android" name="Pushbullet" />
     <icon drawable="@drawable/quickswitch" package="xyz.paphonb.quickstepswitcher" name="QuickSwitch" />
+    <icon drawable="@drawable/quillnote" package="org.qosp.notes" name="Quillnote" />
     <icon drawable="@drawable/rabo_wallet" package="nl.rabowallet" name="Rabo Wallet" />
     <icon drawable="@drawable/rabobank" package="nl.rabomobiel" name="rabobank" />
     <icon drawable="@drawable/recorder" package="com.android.bbksoundrecorder" name="Recorder" />