[✍🏻 Code]: Code Refactor needed for Authflow

[yahu1031]

Request

Code refactor for Auth flow is requested to maintain consistency throughout the authentication flow screens.

NOTE: Proposing the new state management for the mobile app - Flutter Bloc

[yahu1031]

I have done lot of changes in the code right now as of the auth flow itself but can't raise a PR because the whole code right now looks kind of patchy. Hoping the better approach and implementation will be designed.
CC: @vamsi