wip: bundle css

[aralroca]

Related https://github.com/brisa-build/brisa/issues/503

I leave the PR open as draft, as it has to wait for some bug fixes from Bun CSS Parser, too experimental for now, very unstable.

Bun reported bugs: https://github.com/oven-sh/bun/issues/15376

Todo:

• [ ] Wait Bun bug fixes and to be more stable than now
• [ ] Update tests of these files

[pkg-pr-new[bot]]

Open in Stackblitz

brisa-adapter-vercel

``` bun add https://pkg.pr.new/brisa-build/brisa/brisa-adapter-vercel@642 ```

brisa-pandacss

``` bun add https://pkg.pr.new/brisa-build/brisa/brisa-pandacss@642 ```

brisa

``` bun add https://pkg.pr.new/brisa-build/brisa@642 ```

brisa-tailwindcss

``` bun add https://pkg.pr.new/brisa-build/brisa/brisa-tailwindcss@642 ```

create-brisa

``` bun add https://pkg.pr.new/brisa-build/brisa/create-brisa@642 ```

www

``` bun add https://pkg.pr.new/brisa-build/brisa/www@642 ```

commit: 10ff7ef