amelioration(procedure.chorus): ajoute le feature flag chorus aux procedure pour activer/desactiver cette nouvelle feature

app/models/concerns/procedure_chorus_concern.rb

@@ -0,0 +1,9 @@
+module ProcedureChorusConcern
+  extend ActiveSupport::Concern
+
+  included do
+    def chorusable?
+      feature_enabled?(:chorus)
+    end
+  end
+end

app/models/procedure.rb

@@ -4,6 +4,7 @@ class Procedure < ApplicationRecord
   include InitiationProcedureConcern
   include ProcedureGroupeInstructeurAPIHackConcern
   include ProcedureSVASVRConcern
+  include ProcedureChorusConcern
 
   include Discard::Model
   self.discard_column = :hidden_at