Add Login Functionality

[Mayank-sudo]

Overview

This pull request adds a much-needed login functionality to the existing application. The feature allows users to securely log in using their username and password.

Changes

• Implemented user authentication through a login form.
• Integrated backend APIs to handle login requests and token management.
• Added validation and error handling to ensure proper user input.
• Created unit tests for the login functionality to ensure reliability and coverage.

Rationale

Providing a secure and reliable login process is essential for improving user experience and securing sensitive user data. This feature is a foundational step towards enhancing the overall security infrastructure of the application.

Testing

• Unit tests were conducted using [your testing framework] to verify the correctness of the user authentication process.
• Manual testing was also performed to ensure the login form functions correctly across different scenarios, such as incorrect passwords, empty fields, etc.

Screenshots (if applicable)

Add screenshots or GIFs here to show the new functionality in action.

Notes for Reviewers

• Please review the implementation and