Support for create a new project

[chenjiahan]

Can storybook-rsbuild provide a package like create-rsbuild?

It allows users to:

• Create a new Storybook Rsbuild project
• Add Storybook Rsbuild to an existing Rsbuild project

[fi3ework]

In the Storybook philosophy, the project with its builder or framework exists first, then Storybook comes and detect what's tool chain been using and end up with an automatic heuristic initialization with storybook init. See https://storybook.js.org/docs/get-started/install.

As the storybook init command only works with the "official" builders, we need to support a command like storybook-rsbuild init which only generate and install deps for Rsbuild will sufficient.

We could implement a simple version of the command, hope the command could be pluggable with storybook.