refactor(unplugin): HMR + transform

'@pandabox/unplugin': minor

Fix CSS generation when using outfile
Add optimizeJs option to optionally transform your source code by inlining the css / cva / ${patternFn} resulting classNames or even simplify styled JSX factory to their primitive HTML tags (originally coming from @pandabox/unplugin-panda-macro)

-> This is enabled by default and can be disabled by setting optimizeJs to false or "macro" (to only transform functions using with { type: "macro" })
Transform cva to an optimized string-version of the cva function :

-> Style objects are converted to class strings, this might not work when styles should be merged and you can opt-out of this by using with { type: "runtime" } on your cva import or by setting optimizeJs to false (or macro to only transform functions using with { type: "macro" })
Add e2e tests (in-browser + HMR)