Refactor create-react-admin and support ra-supabase

[djhi]

Problem

The interactive mode forces us to document the choices to select, which makes tutorials a bit harder to follow. The recent introduction of the --basic flag only addresses one particular case.

We also want to promote ra-supabase.

TODO

• Update dependencies ra-supabase#83

Solution

• Make the interactive mode optional. By default, create-react-admin will create an empty react-admin app (no data provider, no auth provider, no resource, npm)

  npx create-react-admin myAdmin
  

  Users who want to use interactive mode must specify it:

  npx create-react-admin --interactive myAdmin
  

  Users who want to override one option can do so in the command line

  npx create-react-admin --dataProvider ra-data-json-server --resources posts,users myAdmin
  

• Remove the --basic option, which is now useless

• Add support for provider shortcuts (fakerest -> ra-data-fakerest, etc)

• Add support for more package managers (bun and pnpm)

• Add support for ra-supabase

How To Test

• make build-create-react-admin install
• Then test any combination of flags

It's difficult, even impossible for yarn, to test the detection of the package manager used to run the command:

• bun run ./node_modules/.bin/create-react-admin should use bun as the installer (a bun lock file will be generated)
• npm run ./node_modules/.bin/create-react-admin should use npm as the installer (a npm lock file will be generated)

Additional Checks

• The PR targets master for a bugfix, or next for a feature

[slax57]

Also found some issues while testing

• instructions in the generated Readme only mention npm and yarn

• creating an app with pnpm throws errors at runtime

✘ [ERROR] Could not read from file: /home/slax57/workspaces/remove-me/node_modules/ra-ui-materialui/src

    node_modules/.pnpm/react-admin@5.5.3_@mui+utils@6.4.3_@types+react@18.3.18_react-dom@19.0.0_react-is@19.0.0_react@19.0.0/node_modules/react-admin/src/index.ts:4:14:
      4 │ export * from 'ra-ui-materialui';

I believe it comes from the Vite config.

• creating an app with supabase (and npm) throws error at runtime

You cannot render a <Router> inside another <Router>. You should never have more than one in your app.

I believe duplicate comes from ra-supabase-ui-materialui

• Installing an app with bun or pnpm still says Start the app in development mode by running yarn dev. (yarn)