Feat: Add Backend for Login and Signup Functionalities for the frontend

[parthiv011]

Describe the feature

Connects a frontend to a backend for user login and signup. The backend stores user data securely and validates login credentials. Frontend sends requests and displays responses.

Add ScreenShots

no pic needed for backend

Record

• [X] I agree to follow this project's Code of Conduct
• [X] I'm a GSSOC'24 contributor
• [X] I want to work on this issue

[github-actions[bot]]

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