added previous button in QuizView and toggleable radio

[ayyysh04]

-Added previous button in QuizView
-Added toggleable radio in Quiz and removed the clearAll options button

[github-actions]

Hello @ayyysh04 , That's a great improvement to the code. Have a pinch of paitence while the reviewer gets impressed by the changes you made. Here are some doggos for company while you are waiting for the merge and marching ahead with your Hacktoberfest Contributions, Check your Dashboard for more information on Hacktoberfest. Stay safe 🚀 .

[github-actions]

Hello @ayyysh04 , That's a great improvement to the code. Have a pinch of paitence while the reviewer gets impressed by the changes you made. Here are some doggos for company while you are waiting for the merge and marching ahead with your Hacktoberfest Contributions, Check your Dashboard for more information on Hacktoberfest. Stay safe 🚀 .

[ayyysh04]

-Added darkTheme
-Added theme_service.dart file in Services folder
-Edited theme.dart in utils folder
-Removed scroll glow from list view

[abhibhaw]

Do add a few screenshots of the UI changes in the PR for reference.

[github-actions]

Hello @ayyysh04 , That's a great improvement to the code. Have a pinch of paitence while the reviewer gets impressed by the changes you made. Here are some doggos for company while you are waiting for the merge and marching ahead with your Hacktoberfest Contributions, Check your Dashboard for more information on Hacktoberfest. Stay safe 🚀 .

[ayyysh04]

UI screenshots :

Home Page (Dark Mode)	Quiz Page (Dark Mode)	Drawer (Dark Mode)	Home Page (Dark Mode)	Home Page (Light Mode)

[SriramPatibanda]

This PR tries to add the previous button to the Quiz View, but you had also added dark mode here. Please create a separate PR for separate features as that would be helpful for us in the future. The colors used for dark mode don't make the app look that great I feel. You can choose a dark mode color pallette and comment in the issue and if it seems good, we'll approve and then you can work on it.

[github-actions]

Hello @ayyysh04 , That's a great improvement to the code. Have a pinch of paitence while the reviewer gets impressed by the changes you made. Here are some doggos for company while you are waiting for the merge and marching ahead with your Hacktoberfest Contributions, Check your Dashboard for more information on Hacktoberfest. Stay safe 🚀 .

[ayyysh04]

This PR tries to add the previous button to the Quiz View, but you had also added dark mode here. Please create a separate PR for separate features as that would be helpful for us in the future. The colors used for dark mode don't make the app look that great I feel. You can choose a dark mode color pallette and comment in the issue and if it seems good, we'll approve and then you can work on it.

Done, sorry for the inconvenience

[nayakastha]

@ayyysh04 Can you please put the final screenshots of the changes, so that I can review and merge the changes asap
Please run flutter pub upgrade and make sure you remove the errors. There seems to be one in the file lib/widgets/snackbar.dart