Dioxus 0.7-rc.1 Tailwind inclusion doesn't include plugins (DaisyUI)

**Problem**

In the migration from 0.6 to 0.7-rc.1, I noticed that the current method of including plugins from `input.css` does not work anymore. Tailwind CSS classes and adaptations are rendered, but DaisyUI-specific styles are not.

https://daisyui.com/docs/install/dioxus/ refers to the inclusion via `tailwind.css` and not `input.css`, but no noteable difference is observed. The `dx serve` Tailwind runner just copies the `@plugin` directives without expanding them.

**Steps To Reproduce**

Steps to reproduce the behavior:

- Include DaisyUI as plugin (per https://daisyui.com/docs/install/ ) in `input.css`
- Run `dx serve --web` with `dioxus-cli` (v. 0.7-rc.1)

**Expected behavior**

The manual watcher used in 0.6 was `npx @tailwindcss/cli -i ./input.css -o ./assets/tailwind.css --watch`, which correctly included the plugin. Either enable the built-in watcher to recognize plugins or allow to use the dedicated Tailwind watcher for non-standard configurations.

Rendering via Tailwind CLI to a separate CSS file (e.g. `main.css`) does work, but separates the workflow and creates duplicate Tailwind classes when also including the Dioxus file.