Feature/replace webpack with vite

[DCosti]

Breaking changes

1. Replaced Webpack+Babel with Vite for an enhanced development experience. Removed Webpack and Babel configuration files.
2. Introduced Vite config file (vite.config.js) with a clean and minimal setup. For more configuration options, check here.
3. All files that contains JSX syntax will now have .jsx extension.
4. Migrate from the eslintrc format to the new flat config format. (from .eslintrc.json to eslint.config.js)
5. index.html file have been moved from the public folder to root.
6. All environment variables are now prefixed with VITE_ instead of REACT_.
7. Jest have been removed and vitest is used for testing (see more).

For more information regarding Vite, check here.

Vite key improvements:

1. Lightning-fast cold start and HMR (Hot Module Replacement).
2. Simplified configuration, reducing complexity.
3. Optimized build process with esbuild integration for develop and rollup build for production and built-in tree-shaking.
4. Improved compatibility with modern JavaScript and TypeScript features.