feature(create-expo): configure pnpm and yarn berry when creating a new project

[byCedric]

Why

This should help users getting started easily when using pnpm or yarn berry.

How

I took a few considerations into account:

• Do NOT change existing projects, just like we don't assert/fix gradle or cocoapods config
• Only configure the package manager once, when creating a new project
• Use the package manager itself to configure the project

Test Plan

These commands should now start the project, without problems or additional modifications.

• $ pnpm create expo ./ --template tabs && pnpm expo start
  
• $ yarn create expo ./ --template tabs && yarn expo start
  Make sure you use yarn 2, 3, or 4. Yarn v1 won't configure anything and should work as expected.
  

Checklist

• Documentation is up to date to reflect these changes (eg: https://docs.expo.dev and README.md).
• Conforms with the Documentation Writing Style Guide
• This diff will work correctly for npx expo prebuild & EAS Build (eg: updated a module plugin).