Updating `clsx` version and using lite module to lower bundle size

[aacevski]

Closes: https://github.com/merceyz/babel-plugin-optimize-clsx/issues/22

I have migrated to the latest version of clsx and including the new lite module to lower the bundle size.

I've ran the tests and went through the code and everything looked fine, do we know any further steps on how we can test this more in depth?

[oliviertassinari]

I would expect the plugin to rewrite the imports, in the same way React JSX plugins work. I wouldn't expect any change to the public API.