Add dark mode

app/src/main/res/layout/settings_activity.xml

@@ -0,0 +1,32 @@
+<?xml version="1.0" encoding="utf-8"?>
+<androidx.drawerlayout.widget.DrawerLayout xmlns:android="http://schemas.android.com/apk/res/android"
+    xmlns:app="http://schemas.android.com/apk/res-auto"
+    xmlns:tools="http://schemas.android.com/tools"
+    android:id="@+id/drawer_layout"
+    android:layout_width="match_parent"
+    android:layout_height="match_parent"
+    android:fitsSystemWindows="true"
+    tools:openDrawer="start">
+
+    <androidx.coordinatorlayout.widget.CoordinatorLayout
+        android:layout_width="match_parent"
+        android:layout_height="match_parent">
+
+        <LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
+            android:layout_width="match_parent"
+            app:layout_behavior="@string/appbar_scrolling_view_behavior"
+            android:layout_height="match_parent">
+
+        <FrameLayout
+            android:id="@+id/settings"
+            android:layout_width="match_parent"
+            android:layout_height="match_parent" />
+        </LinearLayout>
+
+        <include
+            layout="@layout/app_bar_drawer"
+            android:layout_width="match_parent"
+            android:layout_height="wrap_content" />
+    </androidx.coordinatorlayout.widget.CoordinatorLayout>
+
+</androidx.drawerlayout.widget.DrawerLayout>