Creating a replacements CLI

[43081j]

At some point, it seems to make sense we create a CLI to make use of the various projects in this org.

A short list of what would be good to have:

• Detect replaceable modules and warn/error when they are detected (same as the lint rule but via a CLI, for those who don't have ESLint)
• Provide a --fix flag or similar which will attempt to auto-replace these modules via codemods
  • This could have an interactive mode too to choose which ones to replace, or "all"
• Automatically update package.json to remove the target modules and execute an npm i
  • Future feature: detect the package manager being used, and run that (via corepack?)
• Provide a github action/workflow example which can run this (or a github bot/integration?)

It'd be very important to make the ux nice, so using something like clack to make it interactive would be good (when needed)

So a few gaps to fill:

• Decide the scope of the CLI (anything more than the above?)
• Decide a name

cc @thepassle

[thepassle]

In the manifests we also have the node version for some of the packages, maybe it would be cool to optionally be able to specify a minimum node version you need to support (but by default apply all codemods when using --fix)

But I also think the scope as you defined it is good enough to start building it