feat(ui): integrate toast notifications for upload feedback

[nayan9617]

🛠️ Pull Request Template

📄 Description

This pull request integrates toast notifications into the client application to improve user experience during the upload and AI analysis workflow.
• Added react-toastify dependency.
• Implemented toast.success to notify users when AI damage analysis completes successfully.
• Implemented toast.error to notify users in case of upload/analysis failure.
• Added to the UI with necessary imports.
• Improved feedback flow for a more professional and user-friendly experience.

✅ Checklist

• [ ✅ ] My code follows the style guidelines of this project
• [ ✅ ] I have performed a self-review of my code
• [ ✅ ] I have commented my code where necessary
• [ ✅ ] My changes generate no new warnings or errors
• [ ✅ ] I have linked the related issue using Fixes #issue_no

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📎 Related Issue

Fixes #109

[vercel]

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A member of the Team first needs to authorize it.

[github-actions]

Thanks for creating a PR for your Issue! ☺️

We'll review it as soon as possible.
In the meantime, please double-check the file changes and ensure that all commits are accurate.

If there are any unresolved review comments, feel free to resolve them. 🙌🏼

[nayan9617]

Hello! This PR only adds toast notifications. CI failures are due to missing environment variables unrelated to this change.
Everything else is fine.
Thank you!