feat:theme changing done

android/app/src/main/AndroidManifest.xml

@@ -1,6 +1,8 @@
 <manifest xmlns:android="http://schemas.android.com/apk/res/android">
     <uses-permission android:name="android.permission.INTERNET" />
     <application
+        android:allowBackup="false"
+        android:fullBackupContent="false"
         android:label="food_delivery_client"
         android:name="${applicationName}"
         android:icon="@mipmap/ic_launcher">