Add menu icon images for up/down sort arrows

android/uhabits-android/src/main/res/drawable-anydpi/ic_sort_ascending_dark.xml

@@ -0,0 +1,11 @@
+<vector xmlns:android="http://schemas.android.com/apk/res/android"
+    android:width="24dp"
+    android:height="24dp"
+    android:viewportWidth="24"
+    android:viewportHeight="24"
+    android:tint="#FFFFFF"
+    android:alpha="0.8">
+  <path
+      android:fillColor="#FF000000"
+      android:pathData="M7.41,15.41L12,10.83l4.59,4.58L18,14l-6,-6 -6,6z"/>
+</vector>

android/uhabits-android/src/main/res/drawable-anydpi/ic_sort_ascending_light.xml

@@ -0,0 +1,11 @@
+<vector xmlns:android="http://schemas.android.com/apk/res/android"
+    android:width="24dp"
+    android:height="24dp"
+    android:viewportWidth="24"
+    android:viewportHeight="24"
+    android:tint="#333333"
+    android:alpha="0.6">
+  <path
+      android:fillColor="#FF000000"
+      android:pathData="M7.41,15.41L12,10.83l4.59,4.58L18,14l-6,-6 -6,6z"/>
+</vector>

android/uhabits-android/src/main/res/drawable-anydpi/ic_sort_descending_dark.xml

@@ -0,0 +1,11 @@
+<vector xmlns:android="http://schemas.android.com/apk/res/android"
+    android:width="24dp"
+    android:height="24dp"
+    android:viewportWidth="24"
+    android:viewportHeight="24"
+    android:tint="#FFFFFF"
+    android:alpha="0.8">
+  <path
+      android:fillColor="#FF000000"
+      android:pathData="M7.41,8.59L12,13.17l4.59,-4.58L18,10l-6,6 -6,-6 1.41,-1.41z"/>
+</vector>

android/uhabits-android/src/main/res/drawable-anydpi/ic_sort_descending_light.xml

@@ -0,0 +1,11 @@
+<vector xmlns:android="http://schemas.android.com/apk/res/android"
+    android:width="24dp"
+    android:height="24dp"
+    android:viewportWidth="24"
+    android:viewportHeight="24"
+    android:tint="#333333"
+    android:alpha="0.6">
+  <path
+      android:fillColor="#FF000000"
+      android:pathData="M7.41,8.59L12,13.17l4.59,-4.58L18,10l-6,6 -6,-6 1.41,-1.41z"/>
+</vector>