Create new create- starter package for 1-command install

[karlhorky]

pnpm, npm and Yarn support starter kit packages prefixed with create-, allowing running arbitrary commands via:

$ pnpm create xxx  # This example would install a package called create-xxx
                   # globally and then run the `create-xxx` bin inside

• Convert to monorepo? (or create new repository for the new create- starter kit package)
  • Separate Stylelint config to stylelint-config-upleveled #218
• Split out scripts/install.js into new create- package
• Publish new packages

TODO: Think of name (maybe create-upleveled, following create-sst, create-expo) that also encompasses other things that we want to set up in a student's project:

• Stylelint, which we added in Add Stylelint dependencies to ESLint config #171
• Patching system for Next.js package Move Next.js patch to install script #204
• Installing SafeQL dependencies in an existing project (during database setup)
• Creating Ley migration files with ESM and TypeScript, instead of having to remember pnpm ley new <filename with extension> --esm
• Creating standard GitHub Actions CI/CD workflows from templates (eg. unit testing, linting and type checking - optionally with integration tests and deployment), like this or this
• Setting up new non-standard options in Expo / React Native https://github.com/upleveled/eslint-config-upleveled/blob/2db51080e8982f443fff9c026fb4867589970872/bin/expo-setup.js , created in Add Expo 51 setup script for New Architecture, new Metro resolver #389

create-x package examples

• https://github.com/nkzw-tech/remdx/tree/main/packages/create-remdx
• https://github.com/sst/sst/tree/master/packages/create-sst
• https://github.com/microsoft/create-playwright
• https://github.com/expo/expo/tree/main/packages/create-expo

Old Suggestion for name:

@upleveled/create-eslint to enable command yarn create @upleveled/eslint

Supersedes #161