Channel generator

[julianrubisch]

Add a generator that will provide a "batteries included" cable ready channel.

This will:

• invoke the ActionCable generator
• if broadcasting to a resource
  • ask for a resource and supply a stream_to call to the channel.rb
  • conditionally add a stimulus controller as in https://cableready.stimulusreflex.com/setup, if a controllers directory is present
• else
  • ask for a channel identifier and insert the stream_for into channel.rb
  • insert the if (data.cableReady) CableReady.perform(data.operations) into the channel.js file, plus import

I wanted to also include a test, but failed at mocking STDIN with StringIO

Closes #94

[hopsoft]

Should we add details like the --stream-for and --stream-from options to the USAGE doc? Looks like there's a merge conflict, but I'm good for this to merge whenever you're ready once conflicts are resolved.

[julianrubisch]

@marcoroth assured me that those details are going to be added automatically when you invoke —help

[julianrubisch]

Good to go!