Fetch all models automatically when not specified in config

[simon-isler]

currently we only load models that are defined in the configuration.

# frozen_string_literal: true

Hotsheet.configure do |config|
  config.model :Author do |model|
    model.included_attributes = %i[name birthdate gender created_at]
  end

  config.model :Post do |model|
    model.excluded_attributes = %i[id author_id created_at updated_at]
  end

  config.model :TableNameTest do |model|
    model.included_attributes = %i[]
  end

  config.model :VeryLongModelNameForOverflowTest do
    nil
  end
end

in this case, we would only show the configured models in the web.

so, it would be nice to have two additional global settings:

• config.included_models
• config.excluded_model

the following table shows an example which models should be configured depending on the included_models and excluded_models config settings:	included_models	excluded_models	ActiveRecord models
nil	nil	fetch all
["Author"]	nil or []	only "Author"
[]	nil or []	nothing, due to empty included_models
nil	["Author"]	fetch all except "Author"