Migration from Nuxt2 to Nuxt3

[tushitshukla03]

Overview

1. This PR fixes or fixes part of #[fill_in_number_here].
2. This PR does the following: [Explain here what your PR does and why]

Essential Checklist

• [ ] The PR title starts with "Fix #bugnum: ", followed by a short, clear summary of the changes. (If this PR fixes part of an issue, prefix the title with "Fix part of #bugnum: ...".)
• [ ] "Allow edits from maintainers" is checked. (See here for instructions on how to enable it.)
• [ ] The PR is made from a branch that's not called "main/master".

Proof that changes are correct

PR Pointers

• If you need a review or an answer to a question, and don't have permissions to assign people, leave a comment like the following: "{{Question/comment}} @{{reviewer_username}} PTAL".
• Never force push. If you do, your PR will be closed.

[netlify[bot]]

✅ Deploy Preview for merch-site ready!

Name	Link
🔨 Latest commit	0bdf85a43fde2ff35c93c391a3b59928fdab1967
🔍 Latest deploy log	https://app.netlify.com/sites/merch-site/deploys/65ffeb8012df29000852016f
😎 Deploy Preview	https://deploy-preview-142--merch-site.netlify.app
📱 Preview on mobile	Toggle QR Code... Use your smartphone camera to open QR code link.

---

To edit notification comments on pull requests, go to your Netlify site configuration.

[Priyansh61]

@tushitshukla03 Why are there 2 frontend and Frontend folder ? Kindly remove one off them.

[Priyansh61]

Also kindly update your branch with the upstream