Expose output helpers to ApplicationComponent

[bradgessler]

To adapt a Rails helper today, developers have to follow the pattern of creating an adapter that's established at https://github.com//phlex-ruby/phlex-rails/blob/version-1-9/lib/phlex/rails/helpers.rb

The define.*_output_helper methods could be exposed directly to ApplicationComponent as class methods to make adapting to third party helpers, like local_time, slightly easier without having to implement a module, like this:

class ApplicationComponent < Phlex::HTML
    include Phlex::Rails::Helpers::Routes
    include Phlex::Rails::HelperMacros

    define_output_helper :local_time

    # ...

The method names may need to be tweaked slightly, like define_output_helper becomes output_helper :local_time or delegate_to_output_helper :local_time

[joeldrapper]

I think we could go further and include them in a patch to Phlex::HTML directly. We already have register_element.

We can simplify things by only providing output_helper_with_capture_block and value_helper_with_capture_block, since those two work with or without blocks, and the 0.1% performance gain from not taking a block isn’t worth it here in my opinion.

We should probably call them register_value_helper and register_output_helper, though I’m open to suggestions for the names.