feat: Add usage with Tailwind documentation

[edgarlr]

Add documentation on how to enable Tailwind IntelliSense inside clsx functions

Fixes #64

[lukeed]

Thanks! Can you move this section between Support and Related?

[edgarlr]

@lukeed Done!

[lukeed]

Thanks :)

[kachkaev]

👋 @lukeed! Thanks for adding this regex! Can you please elaborate on your approach to building it? I was using https://github.com/shadcn/ui/blob/5e172fc34fdf015aa0d141f52cc8c082b8ae6613/.vscode/settings.json#L7-L8 before seeing your solution. There is a slight difference, so I'm curious if there are any edge cases not covered by any of the two regexps:

shadcn/ui
- ["cn\\(([^)]*)\\)", "[\"'`]([^\"'`]*).*?[\"'`]"]
+ ["cn\\(([^)]*)\\)", "(?:'|\"|`)([^']*)(?:'|\"|`)"]
your regex

[lukeed]

@edgarlr contributed this section so perhaps they can offer an explanation.

By eyeballing it, the difference is that ([^']*) will match anything up to ', which means that if " or or backticks appear in the class value, then the regexp in our docs will include it as part of the value, whereas the other regexp stops there.

clsx doc's regexp

shadcn/ui regexp

Looks like they're both not ideal, tbh
I don't use this extension, but perhaps something like this is better? I don't know if the extn is looking for the first matching group only, though