Updated Vite to properly setup PostCSS with PurgeCSS for removing all unused styles on build.

[saaqi]

Changes Made:

This pull request introduces crucial updates to enhance the project's build process. Specifically, I have forked the repository and implemented an updated configuration for Vite to seamlessly integrate PostCSS with PurgeCSS. This ensures that only necessary styles are included in the final build, significantly reducing the overall file size and improving performance.

Testing I have thoroughly tested these changes to ensure compatibility with the existing codebase. The project builds successfully, and I have verified that the application functions as expected with the updated styling.