Add title to Wi-Fi settings dialog

Author: Czompi

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

@@ -5,6 +5,15 @@
     android:layout_width="match_parent"
     android:padding="16dp"
     android:layout_height="match_parent">
+    <TextView
+        android:layout_width="match_parent"
+        android:layout_height="wrap_content"
+        android:text="@string/device_wifi_settings"
+        android:textSize="32sp"
+        android:layout_marginBottom="@dimen/text_margin"
+        android:textAlignment="center"
+        android:gravity="center_horizontal"/>
+
     <com.google.android.material.textfield.TextInputLayout
         android:layout_width="match_parent"
         android:layout_height="wrap_content"