feat: add extract_view_attributes to view templates

lib/generators/simple_controller/templates/views/_detail.json.jbuilder

 json.partial! '<%= view_path %>/simple', <%= resource_singular %>: <%= resource_singular %>
+json.extract!(
+  <%= resource_singular %>,
+  *<%= resource_singular %>.class.try(:extra_view_attributes, 'detail'),
+)
 
 <%- if detail_attribute_names.present? -%>
 json.extract!(

lib/generators/simple_controller/templates/views/_simple.json.jbuilder

 json.partial! '<%= view_path %>/single', <%= resource_singular %>: <%= resource_singular %>
+json.extract!(
+  <%= resource_singular %>,
+  *<%= resource_singular %>.class.try(:extra_view_attributes, 'simple'),
+)
 
 <%- belongs_to_refs.each do |ref| -%>
 json.<%= ref.name.to_s %> <%= resource_singular %>.<%= ref.name.to_s %>, partial: '<%= File.join(ref.klass.name.underscore.pluralize, 'single') %>', as: :<%= ref.name %>

lib/generators/simple_controller/templates/views/_single.json.jbuilder

 <%- if active_record? -%>
 json.extract!(
   <%= resource_singular %>,
-  *<%= resource_singular %>.class.try(:extra_permitted_attributes),
+  *<%= resource_singular %>.class.try(:extra_view_attributes, 'single'),
   :id,
   :created_at,
   :updated_at,