Backend : Authentication Endpoints Move to another view file

[oktayozel]

Issue Description

In order to gat a more organized views I am going to organize views in a better way.

Estimated Time

Estimated Time: 30 minutes

Deadline

Deadline: 3 Nov

Reviewer Assignment

Reviewer: @kaanyolcu22 Review Deadline: 3 Nov

[oktayozel]

https://github.com/bounswe/bounswe2024group6/compare/main...BACKEND-DEV

sorry I did it on the dev branch accidentally but it is here.

@arastasci can you check and close it.

I moved login, logout, and signup to another views file

[arastasci]

lgtm