Errors while running flutter analyze

[ItsAdityaKSingh]

Describe the bug There are many errors while running flutter analyze command. There are issues of linting, naming etc.

To Reproduce Run flutter analyze . in terminal

Expected behavior The code should be error-free

Demonstration

Environment

• Flutter version: 2.8.1

Additional context The errors will need to be sorted for proper code according to the rules of linting.

[ItsAdityaKSingh]

@Erarshad This issue requires solving many different issues like lowerCamelCasing, non-constant identifiers, etc. So, should I create different tasks and solve them partwise for this issue?

[Erarshad]

solve it in one pr