Classe HTML de bloc (#2119)

app/assets/stylesheets/admin/design-system/forms.sass

app/controllers/admin/communication/blocks_controller.rb

app/models/communication/block.rb

app/models/communication/block/with_html_class.rb

app/views/admin/communication/blocks/_static.html.erb

app/views/admin/communication/blocks/edit.html.erb

config/locales/communication/en.yml

config/locales/communication/fr.yml

config/locales/en.yml

config/locales/fr.yml

db/migrate/20240729130823_add_html_class_to_blocks.rb