Organize files in the UI folder

[AkhileshManda]

I understand and confirm the below statements

• [ x] I have read the Wiki and I understand the concept and structure of the app.
• [ x] The functionality has not already been covered in an existing issue.
• [x] Assign this issue to me (I want to work on this).
  • [x] I ensure that I am not already assigned to 2 or more issues.
• [x] I will send my PR only after I'm assigned to this issue by any maintainer.
• [x ] I understand that I will be unassigned from this issue if I fail to send a PR for this within 3 days.

I think the below manner is a better way to organize the files in the UI folder

[AkhileshManda]

@iiitv/flutter-maintainers

[vikiwarrior]

yep go ahead @AkhileshManda