Feature Request: Add Syntax Highlighting for Code Snippets

[sercanvr]

Hello @codicocodes ,

Thank you for creating this typing test tool. It's a fantastic and very helpful project for developers.

I've been using it and have a suggestion regarding the code snippets themselves. I've noticed that the code lacks syntax highlighting and is displayed in a single, plain gray color. This makes it difficult to visually distinguish between keywords, variables, strings, and functions, which can be a bit distracting and less efficient for a typing test.

I believe that adding syntax highlighting, similar to popular VS Code themes, would significantly improve the user experience. It would make the code much more readable and help users feel more comfortable, just like in a real code editor.

Thanks.