Move generators into ViewComponent namespace

[paul]

What are you trying to accomplish?

#2112

ViewComponent generators pollute the generator namespace with a bunch of top level items, and claim the generic "component" name.

Before:

$ rails g
Usage:
  bin/rails generate GENERATOR [args] [options]

General options:
  -h, [--help]     # Print generator's options and usage
  -p, [--pretend]  # Run but do not make any changes
  -f, [--force]    # Overwrite files that already exist
  -s, [--skip]     # Skip files that already exist
  -q, [--quiet]    # Suppress status output

Please choose a generator below.

Rails:
  application_record
  authentication
  benchmark
  channel
  component

...

Erb:
  erb:authentication
  erb:component

Haml:
  haml:component

Locale:
  locale:component

Preview:
  preview:component

Rspec:
  rspec:component

Slim:
  slim:component

Stimulus:
  stimulus
  stimulus:component

Tailwindcss:
  tailwindcss:component

After

$ rails g

ViewComponent:
  view_component:component
  view_component:erb
  view_component:haml
  view_component:locale
  view_component:preview
  view_component:rspec
  view_component:slim
  view_component:stimulus
  view_component:tailwindcss
  view_component:test_unit

What approach did you choose and why?

I moved the generators into a ViewComponent module, instead of sitting at the top-level, so they end up namespaced in the rails g output. I also cleaned up the references to the files and classes within themselves, and in the tests.

Anything you want to highlight for special attention from reviewers?

[reeganviljoen]

@paul how is this com ing along, do you need any help in getting the CI to Passs

[paul]

@reeganviljoen I haven't really looked into it. The CI failures are due to low coverage on completely unrelated files, so I assumed it had something to do with me branching my PR off v4 like @joelhawksley told me to. 😉

[reeganviljoen]

@paul i diddny realize, sorry. @joelhawksley are you able to see what failures are legit?

[joelhawksley]

@paul I think simple cover short-circuited due to /home/runner/.rubies/ruby-head/lib/ruby/3.4.0+0/bundled_gems.rb:76:in 'Kernel.require': cannot load such file -- rails/generators/component/component_generator

[paul]

@joelhawksley Ah, you're right, I didn't see that error at first. Its fixed now. Looks like the errors are releated to changes in Ruby main.

Failure:
RenderingTest#test_render_inline_allocations [test/sandbox/test/rendering_test.rb:18]:
Expected 107 allocations, got 110 allocations for Ruby 3.4.0.

[joelhawksley]

@paul I fixed CI on the v4 branch, mind resolving the merge conflicts here?

[joelhawksley]

This generally looks good to me. Mind updating the docs with the new command syntax and including a second sentence in the changelog summarizing the syntax changes?