feat(create-rsbuild): support for project name with npm scope

[chenjiahan]

Summary

Support for project name with npm scope:

/**
 * 1. Input: 'foo'
 *    Output: folder `<cwd>/foo`, `package.json#name` -> `foo`
 *
 * 2. Input: 'foo/bar'
 *    Output: folder -> `<cwd>/foo/bar` folder, `package.json#name` -> `bar`
 *
 * 3. Input: '@scope/foo'
 *    Output: folder -> `<cwd>/@scope/bar` folder, `package.json#name` -> `@scope/foo`
 *
 * 4. Input: './foo/bar'
 *    Output: folder -> `<cwd>/foo/bar` folder, `package.json#name` -> `bar`
 *
 * 5. Input: '/root/path/to/foo'
 *    Output: folder -> `'/root/path/to/foo'` folder, `package.json#name` -> `foo`
 */

TODO: add e2e case for create-rsbuild.

Related Links

web-infra-dev/rspack#7092

Checklist

• Tests updated (or not required).
• Documentation updated (or not required).

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