feat(create-remix): rewrite create-remix CLI

[markdalgleish]

This PR makes the following changes to create-remix.

• Moves the logic for create-remix out of @remix-run/dev. The Remix CLI no longer has a remix create command (which was kind of odd in the context of an existing app). This means create-remix is now much smaller since it's not downloading the entire Remix CLI and its dependencies up-front.
• Removes the template prompt. This puts official templates and community/third-party templates/stacks on a more equal footing. You need to provide the --template option for anything other than the basic template.
• Adds support for directories in GitHub repo shorthands, e.g. --template remix-run/remix/templates/express
• Replaces the "Stacks" documentation with more general "Templates" docs
• Displays a link to the new "Templates" docs when the --template option isn't provided
• Adds a prompt to automatically run git init.
• Adds a prompt to run the remix.init script if it's detected. This makes it clear when we're running code from the template/stack rather than create-remix itself. This means you can explicitly opt-out too which previously wasn't possible. Instead, you could only implicitly opt out by choosing not to install dependencies.
• Removes support for index.ts in remix.init scripts to simplify things and remove the esbuild dependency from create-remix.
• Removes the option to automatically convert TypeScript to JavaScript.
• Makes the UI a bit nicer.
• Updates all docs to reflect these changes.

Note: This PR replaces #6391 (which was already approved), targeting dev instead of the discarded v2 branch.

[changeset-bot]

🦋 Changeset detected

Latest commit: 07fb787

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

This PR includes changesets to release 18 packages

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

Not sure what this means? Click here to learn what changesets are.

Click here if you're a maintainer who wants to add another changeset to this PR

[github-actions]

🤖 Hello there,

We just published version v0.0.0-nightly-657c9d5-20230721 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!

[github-actions]

🤖 Hello there,

We just published version v0.0.0-nightly-974954f-20230722 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!

[github-actions]

🤖 Hello there,

We just published version v0.0.0-nightly-3b808ce-20230802 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!

[github-actions]

🤖 Hello there,

We just published version 1.19.2-pre.1 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!

[github-actions]

🤖 Hello there,

We just published version v0.0.0-nightly-7cb1e7e-20230803 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!

[github-actions]

🤖 Hello there,

We just published version 1.19.2-pre.2 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!

[github-actions]

🤖 Hello there,

We just published version v0.0.0-nightly-6e250f7-20230805 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!

[github-actions]

🤖 Hello there,

We just published version v0.0.0-nightly-b1149bb-20230810 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!