feat: support bun package manager

[colinhacks]

This adds support for bun to the create-remix package manager detection system. Bun sets the value of npm_config_user_agent when executing a script with bun run/bunx. When a Bun user runs bunx create-remix, they will be prompted to use bun install to install dependencies.

Testing

After building the CLI with yarn build I ran the create-remix script with the npm_config_user_agent set appropriately. It detected the variable and ran bun install as expected.

$ npm_config_user_agent=bun/1.0 node build/node_modules/create-remix/dist/cli.js

 remix   v1.19.2 💿 Let's build a better website...

   dir   Where should we create your new project?
         ./my-remix-app

      ◼  Using basic template See https://remix.run/docs/pages/templates for more
      ✔  Template copied

   git   Initialize a new git repository?
         Yes

  deps   Install dependencies with bun?
         Yes

      ✔  Dependencies installed

      ✔  Git initialized

  done   That's it!

         Enter your project directory using cd ./my-remix-app
         Check out README.md for development and deploy instructions.

         Join the community at https://rmx.as/discord

[changeset-bot]

🦋 Changeset detected

Latest commit: 88c4c2b

The changes in this PR will be included in the next version bump.

This PR includes changesets to release 16 packages

Name	Type
create-remix	Minor
@remix-run/dev	Minor
remix	Minor
@remix-run/architect	Minor
@remix-run/cloudflare	Minor
@remix-run/cloudflare-pages	Minor
@remix-run/cloudflare-workers	Minor
@remix-run/css-bundle	Minor
@remix-run/deno	Minor
@remix-run/eslint-config	Minor
@remix-run/express	Minor
@remix-run/node	Minor
@remix-run/react	Minor
@remix-run/serve	Minor
@remix-run/server-runtime	Minor
@remix-run/testing	Minor

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[colinhacks]

Thanks Michaël, just committed your suggestions.

FYI I also added bun to the create-remix docs here: ddea794 Let me know if it isn't kosher.

[github-actions]

🤖 Hello there,

We just published version v0.0.0-nightly-96b05af-20230816 which includes this pull request. If you'd like to take it for a test run please try it out and let us know what you think!

Thanks!