refactor: remove obsolete test files and clean up manifest

app/android/app/src/main/AndroidManifest.xml

@@ -8,6 +8,7 @@
     <!-- GPS Location permissions -->
     <uses-permission android:name="android.permission.ACCESS_FINE_LOCATION"/>
     <uses-permission android:name="android.permission.ACCESS_COARSE_LOCATION"/>
+    <uses-permission android:name="android.permission.ACCESS_BACKGROUND_LOCATION"/>
     <application
         android:label="votianlt_app"
         android:name="${applicationName}"