Flutter and dart $($vs code$)$Using Firebase Firestore, create a mobile app that will access a database of online

weather$-$based information. The app will contain four elevated buttons $($add$,$ search,

update and delete$)$ and the information will be displayed in a GridView widget. The app

will prompt the user to enter a username and password before conducting an operation

to manage data from the cloud. Run the app on your physical device.

please its urgent. i want a simple code for this question to run on vscode.