refactor(utils): move extract-theme to a separate package

[maiieul]

What is it?

• Feature / enhancement
• Bug
• Docs / tests
• Other

Why is it needed?

Rollup seems confused by the nx (maybe applies to all monorepos) graph, maybe because qwik-ui uses CJS. We have one generic util package in qwik-ui with the cn helper that we use everywhere and the extractThemeCSS (which uses specificity and therefore css-tree) that we use only in one place. The result with that shared Nx package is that rollup bundles cn with css-tree, and then the q-bundle-graph wants to statically import and therefore prefetch that chunk almost on every other chunks. If I separate those utils into 2 separate Nx packages, rollup doesn't bundle them together anymore, resulting in only cn being imported almost everywhere - which is expected since we use it almost everywhere.

Checklist:

• My code follows the developer guidelines of this project
• I have performed a self-review of my own code
• I have ran pnpm change and documented my changes
• I have add necessary docs (if needed)
• Added new tests to cover the fix / functionality

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Latest commit: 19a637d

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[pkg-pr-new]

Open in Stackblitz

npm i https://pkg.pr.new/qwikifiers/qwik-ui@1051

npm i https://pkg.pr.new/qwikifiers/qwik-ui/@qwik-ui/headless@1051

npm i https://pkg.pr.new/qwikifiers/qwik-ui/@qwik-ui/utils@1051

npm i https://pkg.pr.new/qwikifiers/qwik-ui/@qwik-ui/styled@1051

commit: bb23dc1