Added backend logic using express

[tarunkumar2005]

Related Issue

Fixes: #577

Description

Added backend logic using express

Type of PR

• Bug fix
• Feature enhancement
• Documentation update
• Other (specify): _______________

Screenshots / videos (if applicable)

Checklist:

• I have made this change from my own.
• My code follows the style guidelines of this project.
• I have performed a self-review of my own code.
• I have commented my code, particularly in hard-to-understand areas.
• I have made corresponding changes to the documentation.
• My changes generate no new warnings.
• I have tested the changes thoroughly before submitting this pull request.
• I have provided relevant issue numbers and screenshots after making the changes.

@PriyaGhosal Please check the PR and merge this and assign this to me and put relevant labels such as gssoc 2024 ext, hacktoberfest and level. Please give it a level3 i have properly done the backend and professional done it with no errors.

[vercel]

Deployment failed with the following error:

Resource is limited - try again in 3 minutes (more than 100, code: "api-deployments-free-per-day").

[github-actions]

Thank you for submitting your pull request! 🙌 We'll review it as soon as possible. In the meantime, please ensure that your changes align with our contributing.md. If there are any specific instructions or feedback regarding your PR, we'll provide them here. Thanks again for your contribution! 😊

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[PriyaGhosal]

@tarunkumar2005 Your pull request has been successfully merged! Don't stop here—continue contributing by addressing more issues and aiming to become a top contributor. Exclusive swag awaits for those who go the extra mile!
Great contribution ! 🎉