feat: add clsx for dynamic className management

[MehdiRaash]

why using clsx

clsx is a tiny lib, allowing to combine multiple class names conditionally without complex logic, string concatenation, or handling falsy values manually.

Benefits are as follows:

• Conditionally add or omit class names based on boolean expressions.
• Use arrays or objects to manage multiple classes flexibly.
• Avoid including null, undefined, or false values in the class list, as clsx automatically filters them out.

Note: there’s no benefit to using clsx for a single class name, but I applied it throughout the repo for consistency sake.

changes

• feat: add clsx package
• feat: replace className values with clsx