feat(demarche): expose public logo url

app/controllers/procedures_controller.rb

@@ -0,0 +1,17 @@
+class ProceduresController < ApplicationController
+  before_action :retrieve_procedure
+
+  def logo
+    if @procedure.logo.attached?
+      redirect_to url_for(@procedure.logo.variant(:email))
+    else
+      redirect_to image_url(PROCEDURE_DEFAULT_LOGO_SRC)
+    end
+  end
+
+  private
+
+  def retrieve_procedure
+    @procedure = Procedure.find(params[:id])
+  end
+end

config/routes.rb

@@ -351,6 +351,8 @@ Rails.application.routes.draw do
     delete 'france_connect_information' => 'profil#destroy_fci'
   end
 
+  get 'procedures/:id/logo', to: 'procedures#logo', as: :procedure_logo
+
   #
   # Expert
   #