Remove unneeded Node requirements

[gonzaloriestra]

WHY are these changes introduced?

Fixes #2039

After adding a check to show the recommended versions for Ruby and Node in #1945 and #2032, we are now requiring Node for all the commands, even when they don't really need it.

WHAT is this pull request doing?

• Fix the check_version method to only run it for the commands defining the recommended Node rage (recommend_default_node_range).
• Only check the Node versions for app create rails and app create node, as it was before.

We could add it as well for other commands like app serve, but we should check the type of app to avoid doing it for PHP. Also, we should carefully decide where we want to show it and check what operations really need it, so I'll leave it for another moment.

How to test your changes?

Without Node:

1. Uninstall Node (or temporarily remove your node executable with something like mv /usr/local/bin/node /usr/local/bin/node.bk)
2. shopify login
3. It should not complain about the Node version

With a wrong version:

1. Install Node 12 (or change Node::TO to 12.0.0)
2. shopify extension push
3. It should not complain about the Node version

Update checklist

• I've added a CHANGELOG entry for this PR (if the change is public-facing)
• I've considered possible cross-platform impacts (Mac, Linux, Windows).
• I've left the version number as is (we'll handle incrementing this when releasing).
• I've included any post-release steps in the section above.

[gonzaloriestra]

I've updated this to be aligned with the scripts requirements. Also, Node 12 EOL is in April, and this is just a recommendation anyway.

[lorand-horvath]

So, overall, is it still permitted to use Node 12 for running shopify-cli? It's not very clear if it is only a recommendation for certain parts and/or if it is mandatory to have at least 14.5 for other parts of shopify-cli? Please let us know. I'm running latest 12.22.10 and for the moment I cannot upgrade to Node 14+.

[gonzaloriestra]

@lorand-horvath it should work as before for now, it's just a recommendation. But some parts, like scripts, won't probably work with Node 12.

[gonzaloriestra]

@MeredithCastile we were showing this when you just run app create:

$ shopify app create
shopify app create: Creates a ruby on rails app.
  Usage: shopify app create [ rails | node | php ]

But it could also be a Node or PHP app... Let me know if you prefer another description.

[MeredithCastile]

Hmmm. Maybe this?

Creates a basic app
Usage: shopify app create [ rails | node | php ]

Follow up question — Is there a default? Or will the system default to rails?

[gonzaloriestra]

There is no default, we show the help when the type of app is not provided. I'll update the message, thanks!